1.
without good reason; recklessly; thoughtlessly
Doing something carelessly, arbitrarily, or without proper justification. Often appears on signs and in regulations prohibiting an action without due cause.
Stiff, formal register — common in posted notices, regulations, and legal language. The kanji form 妄りに or 濫りに exists but is rarely used; kana is the standard.
Common collocations
- みだりに触る: to touch without permission/reason
- みだりに立ち入る: to enter without authorization
- みだりに使う: to use carelessly or improperly
- みだりに捨てる: to dispose of carelessly