n. 25B6; noun
his election pledge : PROMISE, undertaking, vow, word (of honour), commitment, assurance, oath, guarantee.
he gave it as a pledge to a creditor : SURETY, bond, security, collateral, guarantee, deposit.
a pledge of my sincerity : TOKEN, symbol, sign, earnest, mark, testimony, proof, evidence.
25B6; verb
he pledged to root out corruption : PROMISE, vow, swear, undertake, engage, commit oneself, declare, affirm, avow.
they pledged £100 million : PROMISE (TO GIVE), donate, contribute, give, put up; Brit. covenant.
his home is pledged as security against the loan : MORTGAGE, put up as collateral, guarantee, pawn.