Word: onboard
Part of speech: Verb
Syllables: on
board
Definition: To become a part of a group; to incorporate (someone) into a group.
Morphemes:
Affix: on-
Language: en
PoS: Prefix
Meaning: on, at, toward, upon.
Affix: board
Language: en
PoS: Verb
Meaning: To approach (someone); to make advances to, accost.