Word: gnashest
Part of speech: Verb
Syllables: gna
shest
Definition: Alternative form of gnash; grind together, of teeth
Morphemes:
Affix: gnash
Language: en
PoS: Verb
Meaning: To grind between the teeth.
Affix: -est
Language: en
PoS: Suffix
Meaning: Used to form the second-person singular present tense and past tense of verbs. (if thou is the subject; not used with you)