verified etymologyen
decide
de-
off
caedere
to cut
to cut off
To decide is to cut off — the same caedere that ends -cide (homicide, suicide). Every decision is a small killing of the roads you didn't take. The word never hid the weight of it.
source · Latin dēcīdere = de- ‘off’ + caedere ‘to cut’ (the -cide root) — etymonline.com/word/decide