not to hear and not to ask; used to describe being completely indifferent or showing no interest in something that one should be concerned about

literally "not distinguishing green and red or black and white"; to act without distinguishing right from wrong or checking the facts; to do something rashly without forethought

(variant form) to show no interest in something; to be indifferent or unconcerned; to pay no attention to

to pass something by without showing interest or paying attention; to leave a matter aside and not ask about it.

to not distinguish between right and wrong; without asking for the reason; literally, not asking the difference between green, red, black, and white

Indiscriminately; regardless of the situation, consequences, or who is right or wrong