chalant

adjective

concerned, attentive

Wiktionary

Pronunciation: /ʃəˈlɑnt/

adj

Etymology: A back-formation from nonchalant, itself from Old French non- + chalant (“concerning, bothering”). By this process, the original Old French participle was coincidentally re-formed.

Not nonchalant; careful, attentive, or concerned.
“'I draw the line at nonchalant. Sometimes I think you're very chalant.'”
“Nonchalant putts count the same as chalant putts.”