Tom's reputation is impeccable. ✬

Tom's impeccable manners made a big impression on Mary's parents. ✬

The timing was impeccable. ✬

Tom's manners are impeccable. ✬

Tom speaks impeccable French. ✬

Your manners are impeccable. ✬

Your French is impeccable. ✬

Tom has impeccable taste. ✬

Tom's behavior was impeccable. ✬