can, passable, approval
可 centers on the idea of something being acceptable or permissible: it can be done, it is passable, or it meets with approval.
可 originally depicted a person exhaling or speaking, with 口 (mouth) and a breath-like element above, conveying the idea of expressing permission or affirmation. The modern form retains the mouth component clearly.
The mouth 口 is open, and the top stroke looks like a nod of approval. Together, 可 means something is acceptable or can be done.
For カ, imagine a can of soda being opened with a satisfying pop: can -> カ, and the sound signals approval.
possible; potential; practicable; feasible
cute; adorable; charming; lovely; pretty
funny; amusing; comical; laughable; ridiculous
permission; approval; authorization; license
impossible
acceptable; satisfactory; allowed; permitted
poor; pitiable; pathetic; pitiful
wrong; bad; improper; unjustifiable; inadvisable
funny; amusing; comical; laughable; ridiculous
approval; license; licence; permission
lovely; sweet; pretty; cute; adorable
indispensable; essential
approval; adoption (of a motion, bill, etc.); passage
inevitable; inescapable; unavoidable
incomprehensible; mysterious; inexplicable; inscrutable; enigmatic; baffling
sweet (e.g. young girls, flowers blooming); touchingly lovely; cute
propriety; right and wrong; advisability; possibility
atomic; indivisibility
inviolability; nonaggression; sacredness
to be affectionate to; to treat tenderly; to dote on; to show one's love (for); to cherish
combustibility; inflammability
combustibles; inflammables; flammables; burnables
to allow; to enable; to make possible; to make feasible; to permit
possibility; chance; likelihood; probability