The story
- Latin · derived fromcommittere
- Anglo-Norman · derived fromcommite
- English todaycommittee
From commit + -ee, or else revival of Anglo-Norman commite, past participle of commettre (“to commit”), from Latin committere, from con- (“with”) + mittere (“to send”). The OED3 prefers the first etymology.
Etymology from Wiktionary, CC BY-SA 4.0.