Word: fastest
Part of speech: Verb
Syllables: fast
est
Definition: Alternative form of fast; unwavering in devotion to friend or vow or cause; - Campaign song for William Henry Harrison
Morphemes:
Affix: fast
Language: en
PoS: Adjective
Meaning: Steadfast, with unwavering feeling. (Now mostly in set phrases like fast friend(s) .)
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)