Learner's definition of CLUMSY
[also more clumsy; most clumsy]
moving or doing things in a very awkward way and tending to drop or break things
I'm sorry about spilling your wine—that was very clumsy of me.
I have very clumsy hands and tend to drop things.
He is very clumsy. = He is a very clumsy person.
badly or awkwardly made or done
hard to use
awkward to handle