Two senses share this verb and both appear here. With food or anything repeated it is getting tired of something: 그렇게 질리지도 않고 'you don't get sick of it', 쉽게 질리지도 않고. With a colour word in front it is the face draining — 새파랗게 질렸다 'she went white as a sheet', 하얗게 질린 얼굴. The colour word tells you which one you are hearing.