Word: thrashest
Part of speech: Verb
Syllables: thra
shest
Definition: Alternative form of thrash; beat so fast that (the heart's) output starts dropping until (it) does not manage to pump out blood at all
Morphemes:
Affix: thrash
Language: en
PoS: Verb
Meaning: To thresh; give a thrashing to; beat hard
Affix: -est
Language: en
PoS: Suffix
Meaning: Used to form the superlative of adjectives and adverbs.