Amateur: Beginner, novice, inexperienced
Ambitious: Aspiring, determined, driven
Antagonize: Provoke, irritate, annoyApparent: Obvious, clear, evident
Approve: Accept, endorse, sanction
Arrive: Reach, come
Arrogant: Haughty, conceited, overbearing
Authentic: Genuine, real, original
Average: Ordinary, typical, standard
Awful: Dreadful, terrible, atrocious
Awkward: Clumsy, uncoordinated, ungainly
Ban: Prohibit, forbid, restrict
Barren: Unproductive, sterile, infertile
Bashful: Shy, timid, self-conscious
Beautiful: Pretty, attractive, stunning
Before: Prior to, earlier, previously
Beginning: Start, origin, commencement
Believe: Trust, accept, have faith in
Below: Under, beneath, underneath
Beneficial: Helpful, advantageous, useful
Best: Finest, top, superior
Birth: Beginning, origin, inception
Blend: Combine, mix, merge
Bottom: Base, foundation, underside
Brave: Courageous, bold, fearless
Break: Fracture, shatter, crack
Brief: Short, concise, succinct
Buy: Purchase, acquire, obtain
Calm: Quiet, tranquil, peaceful
Capture: Apprehend, seize, catch
Care: Concern, regard, attention
Calm: Quiet, peaceful, serene, tranquil
Capable: Able, competent, skilled
Capture: Apprehend, seize, catch
Care: Concern, attention, regard, worry
Careful: Cautious, meticulous, attentive
Cause: Reason, basis, source, origin
Certain: Sure, confident, definite
Challenge: Difficulty, obstacle, problem
Change: Alter, modify, transform
Characteristic: Trait, feature, quality
Chief: Main, primary, principal
Circumstance: Situation, condition, event
Clear: Obvious, evident, apparent
Clever: Intelligent, smart, bright
Close: Shut, near, intimate
Common: Ordinary, usual, frequent
Compare: Contrast, examine similarities/differences
Complicated: Complex, difficult, intricate
Concern: Worry, anxiety, care
Confident: Sure, certain, assured
Consider: Think about, contemplate, ponder
Consistent: Steady, regular, dependable
Contain: Include, comprise, hold
Continue: Persist, carry on, proceed
Contribute: Give, donate, provide
Control: Manage, regulate, direct
Convenient: Suitable, easy, handy
Cost: Price, expense, charge
Create: Produce, make, invent
Criticize: Find fault with, disapprove of, censure
Damage: Harm, injure, impair
Dangerous: Risky, hazardous, unsafe
Decide: Determine, choose, resolve
Decrease: Reduce, lessen, diminish
Definite: Certain, sure, clear
Demonstrate Show, display, exhibit
Describe: Explain, depict, portray
Design: Plan, create, conceive
Desire: Wish, want, crave
Develop: Grow, progress, evolve
Difference: Dissimilarity, contrast, variation
Difficult: Hard, challenging, complex
Discuss: Talk about, debate, examine
Discover: Find, uncover, reveal
Dreadful: Terrible, awful, horrible
Eager: Enthusiastic, keen, willing
Early: Beforehand, ahead of time, promptly
Easy: Simple, effortless, uncomplicated
Effect: Impact, consequence, influence
Efficient: Productive, effective, well-organized
Effort: Attempt, try, exertion
Elaborate: Detailed, complex, intricate
Emphasize: Stress, highlight, underline
Employ: Use, utilize, apply
Encourage: Support, motivate, inspire
Enjoy: Like, appreciate, relish
Enormous: Huge, massive, immense
Essential: Necessary, crucial, vital
Establish: Create, set up, found
Evaluate: Assess, judge, analyze
Evident: Clear, obvious, apparent
Excellent: Superb, outstanding, exceptional
Except: Exclude, omit, leave out
Excite: Stimulate, thrill, arouse
Expand: Enlarge, increase, grow
Expect: Anticipate, await, foresee
Expensive: Costly, high-priced, dear
Explain: Clarify, describe, interpret
Extraordinary: Unusual, remarkable, exceptional
Fail: Not succeed, fall short
Fair: Just, reasonable, impartial
Familiar: Known, common, recognizable
Famous: Well-known, renowned, celebrated
Fast: Quick, swift, rapid
Fear: Dread, fright, terror
Feature: Characteristic, attribute, trait
Flexible: Adaptable, pliable, versatile
Follow: Pursue, come after, obey
Foolish: Silly, unwise, absurd
Force: Compel, coerce, pressure
Fortunately: Luckily, by good fortune
Gather: Collect, assemble, accumulate
General: Usual, common, widespread
Genuine: Authentic, real, sincere
Goal: Aim, objective, target
Good: Pleasant, excellent, beneficial
Gradual: Slow, progressive, step-by-step
Great: Large, significant, important
Guide: Lead, direct, instruct
Habit: Custom, routine, practice
Happy: Content, pleased, joyful
Harm: Damage, injury, hurt
Hate: Detest, loathe, despise
Have: Possess, own, hold
Helpful: Useful, beneficial, supportive
Hide: Conceal, cover, disguise
High: Tall, elevated, lofty
Honest: Truthful, sincere, genuine
Hope: Wish, desire, expectation
Idea: Concept, thought, notion
Identify: Recognize, determine, pinpoint
Ignore: Disregard, neglect, overlook
Illustrate: Explain, demonstrate, clarify (often with visuals)
Image: Picture, representation, likeness
Imagine: Visualize, conceive, picture
Immediate: Instant, urgent, pressing
Impact: Effect, influence, consequence
Important: Significant, crucial, essential
Improve: Enhance, better, upgrade
Include: Contain, comprise, incorporate
Increase: Grow, expand, enlarge
Indicate: Show, signify, point out
Individual: Person, single, particular
Influence: Impact, affect, sway
Inform: Notify, tell, advise
Initial: First, beginning, opening
Insist: Demand, assert, emphasize
Instance: Example, case, occurrence
Instead: In place of, rather than
Intelligent: Smart, clever, bright
Intend: Plan, aim, mean
Interest: Fascination, curiosity, attention
Interesting: Engaging, captivating, intriguing
Involve: Include, entail, comprise
Join: Connect, unite, combine
Joke: Jest, funny story, prank
Judge: Evaluate, assess, determine
Keen: Eager, enthusiastic, interested
Key: Essential, crucial, important
Kind: Considerate, friendly, compassionate
Knowledge: Understanding, awareness, information
Large: Big, huge, substantial
Last: Final, ultimate, concluding
Late: Delayed, overdue, tardy
Law: Rule, regulation, statute
Lead: Guide, direct, conduct
Learn: Acquire knowledge, study, master
Least: Smallest, minimum, slightest
Level: Degree, amount, intensity
Likely: Probable, possible, expected
Limit: Restrict, confine, bound
Link: Connect, join, associate
Local: Neighborhood, community, regional
Locate: Find, discover, position
Long: Lengthy, extended, prolonged
Lose: Misplace, fail to win, suffer defeat
Main: Primary, principal, chief
Major: Significant, important, substantial
Manage: Control, direct, handle
Manufacture: Produce, make, fabricate
Method: Way, technique, approach
Minor: Small, insignificant, unimportant
Modern: New, contemporary, up-to-date
Motivate: Encourage, inspire, stimulate
Natural: Normal, typical, expected
Necessary: Essential, required, indispensable
Need: Require, necessitate, demand
Negative: Harmful, unfavorable, detrimental
Notice: Observe, see, perceive
Obvious: Clear, evident, apparent
Occur: Happen, take place, come about
Old: Aged, ancient, elderly
Opinion: View, belief, perspective
Opportunity: Chance, occasion, opening
Oppose: Resist, object to, disagree with
Ordinary: Usual, common, normal
Organize: Arrange, systematize, structure
Participate: Take part in, engage in, join
Particular: Specific, individual, distinct
Patient: Tolerant, understanding, enduring
Perhaps: Maybe, possibly, potentially
Perform: Carry out, execute, accomplish
Permanent: Lasting, enduring, perpetual
Permit: Allow, let, authorize
Persuade: Convince, induce, sway
Plan: Intention, strategy, scheme
Positive: Affirmative, certain, optimistic
Powerful: Strong, influential, forceful
Practical: Useful, functional, pragmatic
Predict: Forecast, foresee, anticipate
Prepare: Get ready, arrange, plan
Prevent: Stop, hinder, obstruct
Previous: Prior, earlier, former
Price: Cost, value, charge
Primary: Main, principal, chief
Problem: Difficulty, issue, obstacle
Produce: Create, make, manufacture
Progress: Development, advancement, improvement
Protect: Guard, defend, shield
Provide: Supply, give, furnish
Quiet: Silent, calm, peaceful
Quick: Fast, rapid, swift
Quite: Fairly, rather, somewhat
Rare: Unusual, uncommon, scarce
Real: Genuine, authentic, true
Reasonable: Sensible, rational, fair
Recent: Modern, new, current
Reduce: Decrease, lessen, diminish
Reject: Refuse, decline, deny
Reliable: Dependable, trustworthy, consistent
Relieve: Ease, lessen, soothe
Remember: Recall, recollect
Remind: Prompt, cause to remember
Remove: Take away, eliminate, discard
Replace: Substitute, exchange, supersede
Require: Need, demand, necessitate
Research: Study, investigation, inquiry
Respect: Admiration, esteem, regard
Responsible: Accountable, answerable, liable
Result: Outcome, consequence, effect
Safe: Secure, protected, unharmed
Satisfy: Please, fulfill, content
Select: Choose, pick, opt for
Serious: Grave, important, significant
Short: Brief, concise, limited
Significant: Important, substantial, considerable
Similar: Alike, comparable, resembling
Simple: Easy, uncomplicated, straightforward
Skill: Ability, expertise, competence
Small: Tiny, little, diminutive
Solution: Answer, resolution, remedy
Special: Unique, distinctive, exceptional
Start: Begin, commence, initiate
Strange: Unusual, odd, peculiar
Strong: Powerful, forceful, robust
Suggest: Propose, recommend, offer
Support: Help, assist, back
Surprise: Astonish, amaze, shock
Talk: Speak, converse, communicate
Teach: Educate, instruct, guide
Terrible: Awful, dreadful, horrible
Theory: Idea, concept, hypothesis
Think: Consider, believe, contemplate
Thought: Idea, concept, reflection
Through: Finished, completed, done
Tough: Difficult, challenging, hard
Typical: Normal, usual, ordinary
Ugly: Unattractive, unsightly, unpleasant
Understand: Comprehend, grasp, know
Unusual: Uncommon, rare, atypical
Useful: Helpful, beneficial, advantageous
Utilize: Use, employ, apply
Valid: Sound, logical, well-founded
Value: Importance, worth, significance
Variety: Diversity, range, assortment
Various: Different, diverse, several
Vast: Huge, immense, extensive
Way: Method, manner, approach
Weak: Feeble, frail, lacking strength
Wealthy: Rich, affluent, prosperous
Whole: Entire, complete, total
Wide: Broad, extensive, vast
Willing: Ready, eager, inclined
Wisdom: Knowledge, insight, sound judgment
Wonderful: Marvelous, fantastic, excellent
Work: Job, employment, occupation
Worth: Value, importance, usefulness
X-ray: (This is a noun, and synonyms depend on how it's used. Here are a few possibilities depending on context)
Yet: Still, nevertheless, however
Young: Youthful, juvenile, immature