1.VACILLATE (VERB): to be unable to decide; to waver between options
Synonyms: waver, hesitate
Antonyms: decide, resolve
Example: She continued to VACILLATE before finally choosing her career path.
2.SUBSERVIENT (ADJECTIVE): excessively obedient or submissive
Synonyms: compliant, deferential
Antonyms: assertive, dominant
Example: He refused to remain SUBSERVIENT and started expressing his own opinions.
3.PIVOTAL (ADJECTIVE): extremely important or crucial
Synonyms: vital, key
Antonyms: insignificant, trivial
Example: That meeting proved to be PIVOTAL in shaping the company’s future.
4.REGRESS (VERB): to return to a previous or less developed state
Synonyms: relapse, revert
Antonyms: progress, advance
Example: Without practice, his skills began to REGRESS over time.
5.ANNIHILATE (VERB): to destroy completely
Synonyms: obliterate, demolish
Antonyms: build, create
Example: The powerful explosion seemed to ANNIHILATE everything in its path.
6.APPREHENSION (NOUN): anxiety or fear about something that may happen
Synonyms: fear, unease
Antonyms: confidence, calmness
Example: She felt a sense of APPREHENSION before speaking on stage.
7.ALACRITY (NOUN): cheerful readiness or eagerness
Synonyms: enthusiasm, willingness
Antonyms: reluctance, apathy
Example: He accepted the challenging task with great ALACRITY..
8.OBFUSCATE (VERB): to deliberately make something unclear or confusing
Synonyms: confuse, blur
Antonyms: clarify, explain
Example: The speaker tried to OBFUSCATE the issue instead of giving a clear answer.
9.PERFUNCTORY (ADJECTIVE): done without interest or effort; superficial
Synonyms: cursory, mechanical
Antonyms: thorough, careful
Example: His PERFUNCTORY response showed he had little interest in the discussion.
10.UBIQUITOUS (ADJECTIVE): present or found everywhere
Synonyms: widespread, omnipresent
Antonyms: rare, scarce
Example: Smartphones have become UBIQUITOUS in modern society.

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