Word: mustest
Part of speech: Verb
Syllables: mu
stest
Definition: Alternative form of must; a necessary or essential thing
Morphemes:
Affix: must
Language: en
PoS: Verb
Meaning: To do as a requirement; indicates that the sentence subject is required as an imperative or directive to execute the sentence predicate, with failure to do so resulting in a negative consequence.
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)