If something is unfashionable, it is not approved of or done by most people because it is out of style.

What does it mean if something is pseudo?

: being apparently rather than actually as stated : sham, spurious distinction between true and pseudo humanism— K. F. Reinhardt.

What does it mean when something is tacky?

1 : not having or exhibiting good taste: such as. a : marked by cheap showiness : gaudy a tacky publicity stunt a tacky outfit. b : marked by lack of style : dowdy.