1. handfast - Noun
2. handfast - Adjective
3. handfast - Verb
Hold; grasp; custody; power of confining or keeping.
Contract; specifically, espousal.
Fast by contract; betrothed by joining hands.
To pledge; to bind; to betroth by joining hands, in order to cohabitation, before the celebration of marriage.
Strong; steadfast.
Source: Webster's dictionary