crud

UK: /krʌd/ US: (krud)

Inflections of 'crud' (v): (⇒ conjugate)

cruds

v 3rd person singular

crudding

v pres p

crudded

v past

crudded

v past p

WordReference Random House Unabridged Dictionary of American English © 2025

crud  (krud), n., v., crud•ded, crud•ding. 
n. 

1. Slang Terms
   • a deposit or coating of refuse or of an impure or alien substance;
     muck.
   • a filthy, repulsive, or contemptible person.
   • something that is worthless, objectionable, or contemptible.
   • prevarication, exaggeration, or flattery.
   • a nonspecific, imaginary, or vaguely defined disease or disorder of the body:
     jungle crud.
   • any unpleasant external ailment, disorder, or the like, as a skin rash.
   • venereal disease, esp. syphilis.
   • [Vulgar.] dried semen.
2. Slang Terms [Dial.] curd.
3. Slang Terms [Dial.] clabber.

v.t., v.i. 

4. Slang Terms [Dial.] to curd.

• 1325–75; Middle English; earlier form of curd

Regional Variation

3. . See clabber. 

Collins Concise English Dictionary © HarperCollins Publishers::

crud / krʌd/ noun

1. a sticky substance, esp when dirty and encrusted
2. an undesirable residue from a process, esp one inside a nuclear reactor
3. something or someone that is worthless, disgusting, or contemptible
4. the crud ⇒ a disease; rot

Etymology: 14th Century: earlier form of curd