strainingly
adverb
- in a straining manner
Wiktionary
adv
Etymology: From straining + -ly.
- So as to strain; with a straining action.
“He sat up after a few moments, and threw back his head, listening strainingly for outside sounds.”
“[…] as soul-deadeningly, eye-strainingly, sleep-inducingly boring as going through fourteen file boxes of sloppily photostatted bank records.”