in·sou·ci·ant (n-ss-nt, s-syä)
Marked by blithe unconcern; nonchalant.
[French : in-, not (from Old French; see in-1) + souciant, present participle of soucier, to trouble (from Old French, from Vulgar Latin *sollictre, alteration of Latin sollicitre, to vex; see solicit).]
This is a word that is not often seen, it seems. I like it. It has a pleasant, woody feel. Can we bring this one back into everyday usage, please?
I’ll set you all a challenge: see if you can slip “insouciant” into your conversation once each day, for the rest of the week. Let me know how you get on.