pledged
1. [ adjective ] bound by or as if by an oath
Synonyms: sworn
Examples:

"according to an early tradition became his sworn brother" "sworn enemies"

Related terms: committed
2. [ adjective ] pledged to be married
Synonyms: affianced betrothed engaged bespoken
Examples:

"the engaged couple"

Related terms: attached
Similar spelling:   pledge
  pledgee
  pledger