1. [adj]  cooked in steam; "steamed clams"
2. [adj]  aroused to impatience or anger; "made an irritated gesture"; "feeling nettled from the constant teasing"; "peeved about being left out"; "felt really pissed at her snootiness"; "riled no end by his lies"; "roiled by the delay"

STEAMED is a 7 letter word that starts with S.