Where does “important” come from?

important (Middle English) comes from Medieval Latin importans, from Latin importo, from Latin in-, from Latin in, from Old Latin en, from Proto-Italic en, from Proto-Indo-European h₁én — in.

Ancestry of “important”, step by step

Step	Language	Word	Meaning
1	Medieval Latin	importans	importing; introducing, causing
2	Latin	importo	I bring, carry or convey into; bring in from...
3	Latin	in-	un-, non-, not; in, within, inside
4	Latin	in	in, at, on, upon, from; within, while in; into,...
5	Old Latin	en	in
6	Proto-Italic	en	in
7	Proto-Indo-European	h₁én	in

Words derived from “important”

important
importantly
unimportant
unimportantly
nonimportant
superimportant
overimportant
importantness
self-important
all-important
impuotant
self-importantly

Every word from Proto-Indo-European h₁én →Every word from Proto-Italic en →Every word from Latin in- →