Hard GRE words.
Once the common words are second nature, these are what separate a strong Verbal score from a top one. They are low-frequency, easy to confuse, and exactly the kind the test uses as near-synonym traps. Learn the precise shade of each, not just a rough gloss.
difficult to understand; obscure
See full entryunlikely to cause offense; bland and inoffensive
See full entryextremely old or outdated
See full entryof doubtful authenticity, though widely circulated
See full entryformal approval or praise
See full entryharshness of tone or manner
See full entryshowing great care, attention, and persistence
See full entrya false statement made to damage someone's reputation
See full entryinclined to find fault and raise trivial objections
See full entryrude and surly in a mean-spirited way
See full entrystubbornly disobedient to authority
See full entryto criticize unfairly so as to belittle
See full entrylacking a plan or purpose; moving randomly from one thing to another
See full entryso thin and delicate as to be nearly transparent
See full entryto conceal one's true motives or feelings by pretense
See full entryshameless boldness or insolent audacity
See full entryto deliberately avoid or abstain from something
See full entryquickly fading or vanishing; short-lived
See full entryextremely bad, unpleasant, or detestable
See full entryto make amends or atone for guilt or wrongdoing
See full entrysilly and pointless in a self-satisfied way
See full entryhighly productive or fertile, whether of land or imagination
See full entryirritable and inclined to cause trouble or quarrel
See full entryto express vehement protest or criticism
See full entryto deny or contradict; to declare false
See full entryusing pompous, lofty, or overblown language
See full entrymarked by peace, prosperity, and happiness; idyllically calm
See full entrydominance or controlling influence of one group over others
See full entrya confused or complicated, often embarrassing situation
See full entryhaving little or no money
See full entryonly partly formed or just begun; rudimentary
See full entrytoo great or extreme to be expressed in words
See full entrytending to obstruct or harm; hostile
See full entryfree from anxiety or concern; carefree
See full entrylacking substance or maturity; naive and simplistic
See full entrytearful or given to weeping; mournful
See full entrya state of weariness and lack of energy
See full entryperfectly clear and transparent; easy to understand
See full entryclumsy or inept, especially in handling situations
See full entryexcessively sentimental in a tearful or self-pitying way
See full entrypleasingly smooth and musical to hear
See full entrya beggar, especially one who lives by alms
See full entryexpressing or conveying a threat
See full entryhaving great variety and diversity
See full entrythe lowest or most unsuccessful point of something
See full entryjust beginning to develop or come into existence
See full entryof little or no value; trifling or ineffective
See full entryto make something deliberately unclear or confusing
See full entrynoisy and difficult to control
See full entryto ease the severity of something without curing it
See full entrya formal speech or piece of writing that praises someone or something
See full entryextremely unwilling to spend money or use resources
See full entrytransparently clear in meaning or appearance
See full entryextremely stingy, or marked by extreme poverty
See full entrydone carelessly or with minimal effort, merely as a routine
See full entrytraveling from place to place rather than staying in one location
See full entrystubbornly persistent in holding to a purpose or opinion
See full entrya strong verbal or written attack on a position or belief
See full entryto speak or act evasively to avoid telling the truth
See full entrycomplete honesty and uprightness of character
See full entryto win or regain the favor of someone by appeasing them
See full entrychildishly silly and immature
See full entryshowing a lack of courage; timid and cowardly
See full entryoccurring every day; ordinary and commonplace
See full entrystubbornly resistant to authority, control, or guidance
See full entrydealing with profound, obscure subject matter beyond ordinary understanding
See full entryhaving keen practical judgment and discernment
See full entryfavorable to health or well-being
See full entrygloomy, sullen, or grimly serious in temperament
See full entryshowing dedicated and persistent effort
See full entrygiven to pompous moralizing in a self-important way
See full entrya position that provides pay but requires little or no work
See full entrytending to induce drowsiness or sleep
See full entryseemingly plausible but actually false or misleading
See full entryextremely loud and powerful in sound
See full entryan excessive amount of something
See full entrya person who flatters others to gain advantage
See full entrypromoting a particular cause or viewpoint in a biased way
See full entryshowing or marked by fearfulness and lack of confidence
See full entrya state of sluggish inactivity or mental dullness
See full entrydepravity or wickedness of character or action
See full entryoffense or annoyance taken at a perceived slight
See full entryexcessively flattering or earnest in a way that feels insincere
See full entryto waver indecisively between options or opinions
See full entrylacking liveliness, interest, or flavor; dull
See full entrywilling to be bribed or act corruptly for money
See full entrythe appearance of being true or real
See full entryto blame or insult someone in harsh, abusive language
See full entryspeaking fluently, readily, and at length
See full entrycharming and attractive in an innocent, appealing way
See full entryThe trap is the near-synonym.
Sentence equivalence pairs hard words with words that almost fit. The only defense is knowing the exact register and connotation, which you build by meeting these words in real sentences.