Strong's #5494: cuwr (pronounced soor)
probably passive participle of 5493; turned off, i.e. deteriorated:--degenerate.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
sûr
1) degenerate
Part of Speech: passive participle
Relation: from H5493
Usage:
This word is used 1 times:
Jeremiah 2:21: "seed: how then art thou turned into the degenerate plant of a strange vine"