The story
- Proto-Indo-European*de
- Proto-Indo-European*déh₁
- Proto-Italic*dē
- Latindē
- Latinde-
- Proto-Indo-European*ḱer-
- Proto-Indo-European*ḱreh₁-sḱéti
- Latincrēscō
- Latindecresco
- Latindecrementum
- English todaydecrement
Borrowed from Latin decrementum.
Etymology from Wiktionary, CC BY-SA 4.0.