better-looking vs on fleek

better-looking and on fleek both are adjectives.

Word	Noun	Adjective	Verb	Adverb
better-looking	No	Yes	No	No
on fleek	No	Yes	No	No

As adjectives, better-looking and on fleek are synonyms defined as:

better-looking and on fleek: pleasing in appearance especially by reason of conformity to ideals of form and proportion

Other synonyms of better-looking include fine-looking, good-looking, handsome, well-favored, well-favoured.

better-looking (adjective)	on fleek (adjective)
pleasing in appearance especially by reason of conformity to ideals of form and proportion	pleasing in appearance especially by reason of conformity to ideals of form and proportion