undercook /ʌndɚ.kʊk/verb 2noun 1forms 3 verb2 •To cook insufficiently. •(figurative) To underdo. noun1 •A subordinate cook.Formerly the domain of cooks, undercooks, and scullery maids, it wasn't even a room a householder would lay claim to, much less single out with items of personal interest. — 2002 formsundercooked · undercooking · undercooks