Meaning

1 senses
  1. A person, organization, or process which is no longer influential, effective, or robust.

    1921, P. G. Wodehouse, The Girl on the Boat (U.S.: Three Men and a Maid), ch. 2, I am a ruin, a spent force, a man without a future!

Forms

plural: spent forces
Singularspent force
Pluralspent forces

regular

See also

neighbours in the dictionary
spent force — meaning, examples, forms, synonyms | Krumeto