Clumsy; awkward with one's hands; not good at fine manual work.
彼は包丁さばきがぶきっちょで、料理中によく怪我をする。
He's clumsy with a knife and often gets hurt while cooking.
ぶきっちょだから、手伝ってくれると助かるよ。
I'm clumsy, so I'd appreciate your help.
不器用でぶきっちょなところが彼の魅力でもある。
His awkwardness and clumsiness are part of his charm.
Inept or incompetent; bungling. Can also mean socially awkward.
彼はプレゼンがぶきっちょで、話の組み立てが下手だ。
He's inept at presentations and poor at structuring his talk.
初対面の場ではぶきっちょな態度が出てしまうことがある。
At first meetings, he can sometimes come across as socially awkward.