Synonyms of the word

unattractive

• adj. Not handsome or beautiful or appealing.
• adj. Lacking the power to attract interest.
• n. An aesthetically unattractive person.

homely

• adj. (Canada, US) Lacking in beauty or elegance, plain in appearance, physically unattractive.
• adj. (archaic) Characteristic of or belonging to home; domestic.
• adj. (Britain dialectal) On intimate or friendly terms with (someone); familiar; at home (with a person); intimate.
• adj. (Britain dialectal, of animals) Domestic; tame.
• adj. (Britain dialectal) Personal; private.
• adj. (Britain dialectal) Friendly; kind; gracious; cordial.
• adj. (archaic) Simple; plain; familiar; unelaborate; unadorned.

plain

• adj. (now rare, regional) Flat, level.
• adj. Simple.
• adj. Obvious.
• adj. Open.
• adj. Not unusually beautiful; unattractive.
• adv. (colloquial) Simply.
• n. (rare, poetic) A lamentation.
• v. (reflexive, obsolete) To complain.
• v. (transitive, intransitive, now rare, poetic) To lament, bewail.
• n. An expanse of land with relatively low relief.
• n. A battlefield.
• n. (obsolete) A plane.
• v. (obsolete, transitive) To level; to raze; to make plain or even on the surface.
• v. (obsolete, transitive) To make plain or manifest; to explain.

subfusc

• adj. Having subdued colors.
• n. Dark clothing.
• n. Clothing acceptable, by regulation at certain universities, for an examination or official event.

ugly

• adj. Displeasing to the eye; not aesthetically pleasing.
• adj. Displeasing to the ear or some other sense.
• adj. Offensive to one's sensibilities or morality.
• adj. Ill-natured; crossgrained; quarrelsome.
• adj. Unpleasant; disagreeable; likely to cause trouble or loss.
• n. (slang, uncountable) Ugliness.
• n. (slang) An ugly person or thing.
• n. (Britain, informal, dated) A shade for the face, projecting from a bonnet.
• v. (transitive, nonstandard) To make ugly (sometimes with up).

unappealing

• adj. Not appealing.

uninviting

• adj. Not welcoming; not attractive.

unprepossessing

• adj. Unimpressive or unremarkable; dull and ordinary; nondescript.

unpresentable

• adj. Not presentable.

unseductive

• adj. not seductive.

untempting

• adj. Not tempting.