washy

[wosh-ee, waw-shee] /ˈwɒʃ i, ˈwɔ ʃi/
adjective, washier, washiest.
1.
diluted too much; weak:
washy coffee.
2.
pale, thin, or weak, as if from excessive dilution; pallid:
washy coloring.
Origin
1560-70; wash + -y1
British Dictionary definitions for washy

washy

/ˈwɒʃɪ/
adjective washier, washiest
1.
overdiluted, watery, or weak
2.
lacking intensity or strength
Derived Forms
washily, adverb
washiness, noun