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“onychophagists”
onychophagist (s), onychophagists (pl) (noun forms)
Those who chew on their fingernails: "Some onychophagists try to avoid letting others see their nail biting habits, but quite often they are so upset that they can't help themselves."
This entry is located in the following units:
-ist
(page 42)
onych-, onycho-, ony-, -onychia, -onychial, -onychium, -onyx- +
(page 4)
phago-, phag-, -phage, -phagi, -phagic, -phagically, -phagia, -phagism, -phagist, -phagic, -phagous, -phagy
(page 12)