deteriorate

The story

1. Latin · derived fromdēterior“worse”
2. Late Latin · derived fromdēteriorō
3. Late Latin · learned borrowing fromdēteriorātus
4. English todaydeteriorate

Learned borrowing from Late Latin dēteriorātus, perfect passive participle of Late Latin dēteriorō (see -ate (verb-forming suffix)), further from Latin dēterior (“worse”). Cognate with French détériorer.

Words from the same roots