i Register
In some senses, clunky is marked as informal. Watch for register when choosing this word.
adj
Ungainly; awkward; inelegant; cumbersome.
That tomboy's clothing is rather clunky.
At a time when Mr. Cameron is being squeezed from both sides — from the right by members of his own party and by the anti-immigrant, anti-Europe U.K. Independence Party, and from the left by his Liberal Democrat coalition partners — the move seemed uncharacteristically clunky.
Being or making a clunk sound.
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?