hard up
verb1
Synonym of harden up (to become or make hard)
adj, verb — 4 senses
Colloquial Lacking money; impecunious; in financial difficulties.
Colloquial Lacking anything.
Broadly, Colloquial Desperate.
Synonym of harden up (to become or make hard)
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.