An onychophagist is someone who has the habit of biting their nails. This habit can result in damage to the nails and cuticles, as well as potential infections.
You can try putting something on your cuticles that tastes really bad to keep you from biting them. You can also convince yourself that your hands touch a lot of nasty things throughout the day and in your mouth is the last place they should be.
Nail biting is a habit disorder and it should not be overlooked, otherwise it will become an uncontrollable habit.
She had a habit of biting her nails.
Her bad habit was biting her nails.
Bella's nervous habit was biting her lower lip.
An antonym for habit, is not doing it. Also called, deviation.
It is the habit of biting one's nails.
Biting his nails
biting his nails
biting her lip and her nails
we proboble biting his nails