Unseemly

wiktionary

ref

From Middle English unsemli, probably a partial calque of Old Norse úsǽmiligr(“unseemly”); equivalent to un- +‎ seemly. Cognate with Icelandic ósæmileg(“offensive”), Norwegian usømmelig(“unseemly”), Danish usømmeligt(“unseemly”).

etymonline

ref

unseemly (adj.)

c. 1300, "visually unpleasing, unattractive, ugly;" mid-14c., "unfitting, indecent, inappropriate," from un- (1) "not" + seemly (adj.). Similar formation in Old Norse usoemiligr. Related: Unseemliness.