Definition of wish-wash in English:

wish-wash

noun

mass nouninformal
  • 1A weak or watery drink.

    ‘one pot of wish-wash called ‘tea’’
    • ‘They spoke English, too, although a waitress in a local coffee shop did not know what ‘espresso’ meant, and I ended up with a cup of a watery Welsh wish-wash.’
  • 2Insipid or excessively sentimental talk or writing.

    ‘this isn't just emotional wish-wash’

Origin

Late 18th century: reduplication of wash.

Pronunciation

wish-wash

/ˈwɪʃwɒʃ/