Word: betroth
Part of speech: Verb
Syllables: be
troth
Definition: To promise to take (as a future spouse); to plight one's troth to.
Morphemes:
Affix: be-
Language: en
PoS: Prefix
Meaning: Forming verbs derived from nouns or adjectives, usually with the sense of "to make, become, or cause to be".
Affix: true
Language: en
PoS: Noun
Meaning: A pledge or truce.
Affix: -th
Language: en
PoS: Suffix
Meaning: A variant of -eth, used to form the archaic third-person singular indicative present tense of verbs.