From Middle English cruddi, equivalent to crud +‎ -y.

• IPA^(key): /ˈkɹʌdi/

• Audio (General Australian):

  (file)

• Rhymes: -ʌdi

cruddy (comparative cruddier, superlative cruddiest)

1. (slang) Full of crud.

   Synonyms: begrimed, dirty, mucky; see also Thesaurus:unclean

2. (slang) Crummy, lousy, worthless.

   Synonyms: low-grade, second-rate; two-bit, valueless; see also Thesaurus:low-quality, Thesaurus:worthless

   Because I didn't study for my test, I feel like I'm gonna make a pretty cruddy grade.

3. (slang) Annoying, irritating.

   Synonyms: bothersome, irksome, vexatious; see also Thesaurus:annoying

   Some children's cartoons sure have cruddy theme songs.

4. (obsolete) Coagulated.
   • 1590, Edmund Spenser, “Book I, Canto V”, in The Faerie Queene.[…], London: […] [John Wolfe] for William Ponsonbie, →OCLC, stanza 29:

     His cruell wounds with cruddy blood congeal'd.

• crufty
• crusty