dieting
understating
avoidingbreakingcrawlingdrinkingenduringfloatingguessinghumoringinvitinglisteningmountingnoticingorderingpressingprintingquittingroastingstealingtreadingunendingvouchingwateringyielding
Wrung, Slang
Matching
"Sucking."
Feeling has seven letters... But a feeling could be hurting
understating
avoidingbreakingcrawlingdrinkingenduringfloatingguessinghumoringinvitinglisteningmountingnoticingorderingpressingprintingquittingroastingstealingtreadingunendingvouchingwateringyielding
One example of an 8-letter word ending with "ing" is "starting." It refers to the act of beginning something or initiating a process.
Inventing, investing.
Wrung, Slang
rushing, sorting, falling
Cussing
writing
x-raying
A nine letter word using those letters is boomerang.
The word that can end in "ing" and relates to day is "daydreaming."