noun, noun which may take the genitive case particle 'no'
somewhat excited; a bit agitated
Describes a state of being slightly or somewhat excited or agitated, often used when the excitement is noticeable but not extreme.
彼は試合の前で興奮気味だった。
He was somewhat excited before the match.
興奮気味の声で話し始めた。
He started speaking in a slightly agitated voice.
興奮 means 'excitement' or 'agitation' in a general or strong sense, while 興奮気味 specifically indicates a mild or somewhat excited state.
Compound of 興奮 (excitement) and 気味 (suffix indicating a slight tendency or state).