1.Errant
Meaning: wrong, deviant
Synonym: erratic, stray
Antonym: normal
Example Sentence: I saw an errant man shouting at his daughter for skipping office
2. Implacable
Meaning: merciless
Synonym: cruel. unforgiving
Antonym: kind, remorseful
Example Sentence: Clinton accused congressional Republicans of “implacable hostility”.
3. Perpetual
Meaning: Continual, lasting
Synonym: Ceaseless, infinite
Antonym: Bounded, Ceasing
Example Sentence: The perpetual struggle to maintain standards in a democracy
4.Quixotic
Meaning: idealistic
Synonym: dreamy, foolish, impractical
Antonym: cautious, realistic, wise
Example Sentence: That sounds quixotically noble, this stands for the ‘inviolability of marriage.
5. Reminiscent
Meaning: Suggestive of something in the past
Synonym: Evocative, redolent
Antonym: forgetful, oblivious
Example Sentence: Cannot forbear to close on this reminiscent literary note.