英英辞典より
1. lacking skill in moving (parts of ) the body easily; clumsy;
an awkward movement { He is rather awkward with his hands.}
2. difficult to use or handle :
It's rather an awkward shape.
I had to bang in the nail at a rather awkward angle.
it's an awkward machine to use.
3. causing difficulty or unconfortable feeling; inconvenient or embarrassing.(EMBARRASS).
Our visitors came at an awkward time.
It was an awkward time to call.
They've been asking some very awkward questions.
Don't go to near the dog--he's an awkward customer.(=is dangerous to deal with)
4. unwilling to help or agree; PERVERSE.
Don't be so awkward ---we've got to get this finished by tonight.
Note:
Clumsy 不器用な、
Perverse つむじ曲がりの、ひねくれた。 （名詞形）perversity 片意地、つむじ曲がり。