capable
able は五感（目・耳・鼻・舌・皮膚）の身体能力を含め、常識的に能力として認められる場合に使われる。adequate と同じ意味に使える capable はもっと複雑な、時には潜在能力を含んだ言葉。誉め言葉にも悪い意味にも使える
capable
/ˈkeɪpəbl/
1 having the ability or qualities necessary for doing something
capable of something You are capable of better work than this.
capable of doing something He's quite capable of lying to get out of trouble.
I'm perfectly capable of doing it myself, thank you.
He is more than capable of playing at an international level.
He is still capable of doing the job.
Collocations
verbs
adverb
more than
2 having the ability to do things well
She's a very capable teacher.
I'll leave the organization in your capable hands.
a highly capable individual
Employees who prove themselves to be capable will usually get promoted quite rapidly.
Collocations
verbs
adverb
Word Origin
mid 16th cent. (in the sense ‘able to take in’, physically or mentally): from French, from late Latin capabilis, from Latin capere ‘take or hold’.