1. Pam’s father was unhappy that she intended to marry a man he didn’t approve of. He wanted her to know why he disapproved of the man, so he spoke his piece, but he ended by saying that he would leave the decision up to her.
2. I’ve always been honest with you about how I feel and what I think. I’ve never been shy about speaking my piece.

Synonym: speak (one’s) mind. The expression speak one’s piece is usually used to describe what someone does when he disagrees strongly with someone else but has little control over the situation. The speaker wants the person to know his feelings and may present them in an uninterrupted monologue (piece).