- Gaudy, flashy, showy, garish.
- (colloquial) In poor taste.
"That was a tacky thing to say."
- Shabby, dowdy (in one's appearance).
- (colloquial) Of low quality.
"That market stall sells all sorts of tacky ornaments."
- Dowdy, shabbily dressed.
- Of a substance, slightly sticky.
"This paint isn't dry yet - it's still a bit tacky."
- Alternative form of tackey