English
insouciantly
From insouciant + -ly.
A compound of insouciant + -ly
Latin sollicitō
Middle French soucyer ‘to worry’
French soucier ‘worrying’
French insouciant ‘carefree, without worries’
English insouciant
Today it means
adv In an insouciant manner.
Language periods are conventional ranges, not dates for this word.
Etymograph / insouciantly