Definition of coolth in English:

coolth

noun

  • 1Pleasantly low temperature:

    ‘the coolth of the evening’
    • ‘She promised coolth in San Francisco, where Julia had set her heart on spending the night.’
    • ‘Do we see the whiteness of the snow, but only believe in its coolth?’
    • ‘How soothing it is, forsooth, to desire coolth and vanquish inadequate Brit warmth.’
    • ‘The walls of the house alone have 230,000 lb of adobe mass that can store heat and coolth (yes, this is a word).’
  • 2informal The quality of being fashionable:

    ‘the pinnacle of 1960s coolth’
    • ‘Of course, just saying ‘hippest’ gives away my age and my utter lack of coolness or coolth or whatever term those people are using these days.’
    • ‘The dialogue is actually smart and sharp, without studied and overwritten coolth.’

Origin

Mid 16th century (but rare before the 20th century): from cool + -th.

Pronunciation:

coolth

/kuːlθ/