narrow face
bizygomatic (upper face) and bigonial (lower face) width are both more than 2 standard deviations below the mean (objective); or, an apparent reduction in the width of the upper and lower face (subjective)
en-US/ˈnæɹoʊ ˈfeɪs/
en-GB/ˈnæɹəʊ ˈfeɪs/