CSS Solved Synonyms and Antonyms

Cavil (Verb) means: To raise petty, trivial, frivolous or unnecessary objections, especially about things that are not important. If one says that somebody cavils at something, it means we say that they make criticisms of it that we think are unimportant or unnecessary.
Synonyms
Synonyms of “Cavil” are:
Captious, Carping, Censorious, Hypercritical, Cross, Fault finding, Critical, Cynical, Petulant, Irritable, Splenetic, Touchy, Peevish, Fretful, etc.
Antonyms
Antonyms of “Cavil” are:
Appreciative, Commendatory, Encouraging, Complimentary, Approving, Laudatory, Flattering, etc.

Sinister (Adj.) means: Harmful, menacing, or vindictive. Anything that make us feel that something bad or evil might happen is called sinister.
Synonyms
Synonyms of ‘Sinister’ are:
Evil, threatening, menacing, forbidding, dire, ominous, malignant, malevolent, baleful, injurious, bode-full, vindictive, dangerous, deadly, intimidating, harmful, pernicious, noxious, venomous, ruinous, minatory, maleficent, minacious, vicious, hostile, spiteful, rancorous, evil-minded, etc.
Antonyms
Antonyms of ‘Sinister’ are:
Good, encouraging, reassuring, calming, benign, heartening, benevolent, auspicious, propitious, etc.
Word in a sentence
There is a sinister feeling about that old abandoned house.
The ruined building had a sinister appearance.
Marry has dark, sinister eyes, which make people nervous when she looks at them.