Is it ensure, insure, or assure?
"morbidly swollen," 1540s, from Latin tumidus, from tumere "to swell" (see thigh). Figurative sense (in reference to prose, etc.) is attested from 1640s.
tumid tu·mid (tōō'mĭd, tyōō'-)adj.
Swollen; distended. Used of a body part or organ.
Of a bulging shape; protuberant.