IPA: /ˈtæksɪŋli/
KK: /ˈtæksɪŋli/
In a way that is demanding or difficult, often causing stress or fatigue.
She worked taxingly on the project, feeling exhausted by the end of the day.
Taxingly → It is formed from "tax" (from Latin "taxare", meaning to assess or estimate) and "-ingly" (a suffix used to form adverbs). The word "taxingly" means in a manner that assesses or burdens, often referring to something that is burdensome or demanding.
Think of the word 'tax' which means to assess or burden, and remember that 'taxingly' describes doing something in a burdensome way.