gung-ho
adjective /ˌɡʌŋ ˈhəʊ/
/ˌɡʌŋ ˈhəʊ/
(informal, disapproving)- too enthusiastic about something, without thinking seriously about it, especially about fighting and war
- Many people found her gung-ho attitude to the war deeply offensive.
Word OriginSecond World War: from Chinese gōnghé, taken to mean ‘work together’ and adopted as a slogan by US Marines.