What's everybody's business is nobody's business.
Kyōdō sekinin wa musekinin ni naru.
doing together (as equals); sharing; common (land, etc.); joint (statement, etc.); cooperation; co-operation; collaboration; association
duty; responsibility (incl. supervision of staff); liability; onus
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although
to become; to get; to grow; to be; to reach; to attain; to result in; to prove to be; to consist of; to be composed of; to succeed; to be complete; to change into; to be exchanged for; to play a role; to be promoted; to do ...
Readings: キョウ、 とも、 とも.に、 -ども
Meanings: together, both, neither, all, and, alike, with
Readings: ドウ、 おな.じ
Meanings: same, agree, equal
Readings: セキ、 せ.める
Meanings: blame, condemn, censure
Readings: ニン、 まか.せる、 まか.す
Meanings: responsibility, duty, term, entrust to, appoint
Readings: ム、 ブ、 な.い
Meanings: nothingness, none, ain't, nothing, nil, not