Green’s Dictionary of Slang

cowardly, weak, effeminate.

1977		Harvard Crimson 12 Sept. 🌐 A group of jocks stand on the Weld stairs. ‘Soccer!’ one shouts, ‘What kind of wussy sport is that? Look no hands! Nah, I’m just shittin’ ya.’.
1989		Atlanta Journal/Constitution 26 Nov. G-7/1: President George Bush at his wussy worst.
1996		P. Beatty White Boy Shuffle 157: I want to [...] overthrow all those neutral Scandinavian wussy socialists.
1999		Guardian Rev. 1 Oct. 10: I always thought that anyone who’d approached that genre had always painted a rather woolly, wussy picture of the villains.
2000		Guardian G2 6 June 2: Unlike my wussie compadres, who used to get teary and bleary [...] I never found cocaine a problem.
2003		McGill Reed Dict. of N.Z. Sl.
2014		L. Piper Counting Wild Strawberries 302: ‘You’re as mad as a gum tree full of galahs!’ laughed Duncan. ‘C’mon guys, if a wussey pom can do this, so can we!’.