be (of) no use to man or beast

be (of) no use to man or beast

To be completely useless; to serve no purpose; to be unsuitable to anyone or anything. I admire the intelligence with which you argue your points, friend, but unless you're willing to put your words into action, I'm afraid your philosophizing is of no use to man or beast. After 20 years, my faithful old truck finally broke down for good. It's no use to man or beast anymore.
See also: beast, man, no, use
Farlex Dictionary of Idioms.

no use to man or beast

or

no good to man or beast

LITERARY
If someone or something is no use to man or beast, they are completely useless. Much against his will, he took with him six complete beginners, of no use to man or beast. Note: This is part of the old saying, `When the wind is in the east, 'tis neither good for man nor beast.'
See also: beast, man, no, use
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • be no good to man or beast
  • be no good/use to man or beast
  • no use to man or beast
  • admire to (do something)
  • admire to do
  • be not worth a plug nickel
  • not worth a continental
  • be not worth the paper it's printed on
  • (as) useless as tits on a nun
  • nun