Inflected forms: thwart·ed, thwart·ing, thwarts 1. To prevent the occurrence, realization, or attainment of: They thwarted her plans.2. To oppose and defeat the efforts, plans, or ambitions of.
NOUN:
Nautical A seat across a boat on which a rower may sit.
ADJECTIVE:
1. Extending, lying, or passing across; transverse. 2. Eager to oppose, especially wrongly; perverse.
ADVERB & PREPOSITION:
Archaic Athwart; across.
ETYMOLOGY:
Middle English thwerten, from thwert, across, from Old Norse thvert, neuter of thverr, transverse. See terkw- in Appendix I.