Also found in: Thesaurus, Idioms.
adj. wish·y-wash·i·er, wish·y-wash·i·est Informal
a. Irresolute or indecisive: a wishy-washy supervisor who can't decide what to do.
b. Lacking in purpose; weak or ineffective: a wishy-washy response to the criticism.
2. Thin and watery, as tea or soup.
[Reduplication of washy, thin, watery, from wash.]