noun, noun or participle which takes 'suru', transitive verb
neglect; disregard; making light of
Refers to treating something as unimportant, neglecting it, or not giving it proper attention. Often used in formal or written contexts.
彼は仕事を等閑にして遊んでばかりいる。
He neglects his work and does nothing but play.
安全対策を等閑に付すことは許されない。
It is unacceptable to disregard safety measures.