There are 2 main definitions of tacky in English:

tacky1

Syllabification: tack·y
Pronunciation: /ˈtakē
 
/

adjective (tackier, tackiest)

(Of glue, paint, or other substances) retaining a slightly sticky feel; not fully dry: the paint was still tacky
More example sentences
  • It puts out a real sticky, tacky substance and is designed to restrict the movement of somebody.
  • If a fibre is mechanically extruded from a solution of (natural or artificial) silk protein just like pulling a thread from tacky glue, the fibre is still not as strong as real silk thread.
  • Remove each stick, add a dot of tacky glue to the hole, and replace the stick.
Synonyms

Derivatives

tackiness

noun
More example sentences
  • The primer seals the floor, increases the tackiness of the floor and improves the adhesive qualities.
  • Depending on the tackiness of the glue you use, you may have to hold each of these stands on while the glue dries.

Definition of tacky in:

There are 2 main definitions of tacky in English:

tacky2

Syllabification: tack·y
Pronunciation: /ˈtakē
 
/

adjective (tackier, tackiest)

informal
Showing poor taste and quality: even in her faintly tacky costumes, she won our hearts
More example sentences
  • Personally, I don't have a particular problem with people who insist on doing up their houses in all forms of cheap nasty tacky decorations.
  • Everything from Samuels's tacky costumes to his choice of entertainment is selected with one thought in mind: making sure his guests feel comfortable and relaxed.
  • However beautiful it was, I knew I'd never be able to wear anything like it short of a wedding dress or a tacky costume for a play, and I didn't even plan on getting married.
Synonyms
tawdry, tasteless, kitsch, kitschy, vulgar, crude, garish, gaudy, showy, trashy, cheesy, cheap, common, second-rate

Origin

early 19th century: of unknown origin. Early use was as a noun denoting a horse of little value, later applied to a poor white in some southern states, hence 'shabby, cheap, in bad taste' (mid 19th century).

Derivatives

tackily

Pronunciation: /ˈtakəlē/
adverb
More example sentences
  • The trick here is to capture the most gaudily and tackily dressed tourists on film.
  • Once inside, she lined up behind a tackily dressed woman.
  • It was small, tackily decorated, and questionably clean, but I hardly noticed.

tackiness

noun
More example sentences
  • I urge you all to grab a camera and go riding through the night, spying on your gaudy neighbors, as I will award a prize to the person who sends me the picture of the most horrible display of Christmas tackiness.
  • In some of the wealthier suburbs over there, they get in electrical contractors to do a professional lighting job on their houses and, unfortunately, tackiness often wins out over good taste.
  • It could be described as the ultimate in souvenir tackiness.

Definition of tacky in: