a man/woman of his/her word
A person who keeps their promises: she was a woman of her word...- A man of his word, he at last kept the promise he'd made to his wife in 1986 - the year they bought a shingled cottage.
- He's a man of his word, and after Tuesday we will have a clearer indication.
- She described him as a man of his word and said they should trust reassurances he's made about any future Supreme Court appointments.
See parent entry: word