tinny

Etymology 1

From tin + -y.

adj

1. Of or pertaining to or resembling tin.
   The object had a tinny appearance.
2. Pertaining to the thinness and cheapness of tin or similar-looking metals, in contrast to a heavier, more valuable metal.
   The shop was filled with tinny tourist geegaws.
3. Pertaining to a thin, unpleasant sound recalling that of tin being rapped.
   The piano was not simply out of tune, but had become downright tinny.
   You might find yourself listening to the sound your car door makes when it shuts. Is it a cheap tinny sound or a strong clunky sound like the VW? 2012, Mike Brent, Fiona Dent, The Leader's Guide to Influence

Etymology 2

From tin + -y (diminutive suffix).

noun

1. Alternative form of tinnie