I is for
insouciant
adjective
showing a casual lack of concern.
"an insouciant shrug"
"an insouciant shrug"
intemperance
noun
lack of moderation or restraint.
"his occasional intemperance of tone"
Definitions from Oxford Languages
insouciant
adjective
intemperance
noun
lack of moderation or restraint.
"his occasional intemperance of tone"
Definitions from Oxford Languages