(informal) Of poor quality; shoddy, small-time, or amateurish. / Crooked; underhanded. / (music) Tinkling and tinny.

(countable) An amateur or someone who is underqualified. / (countable) Something that is not up to acceptable standards. / (countable) Deceptive or underhanded rigmarole; trickery.

plural of rinky-dink