thrust has 20 distinct synonyms spread across 10 of its 13 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a strong blow with a knife or other sharp pointed instrument
“one strong stab to the heart killed him”
1 of the 13 recorded senses carries no synonym, antonym or related term, so it is not shown above. Every sense, with its definition and examples, is on the full entry for thrust.
Synonyms, antonyms and the broader and narrower relations for thrust come from Princeton University’s WordNet. Full sources and licences.
the act of applying force to propel something
“after reaching the desired velocity the drive is cut off”
verbal criticism
“he enlivened his editorials with barbed thrusts at politicians”