na-adjective, noun which may take the genitive case particle 'no'
perfunctory; makeshift; slapdash; half-hearted
Describes doing something in a superficial, careless, or merely going-through-the-motions way, without proper effort or sincerity. Often used for work, responses, or arrangements that are done just to get by.
彼のおざなりな返事にがっかりした。
I was disappointed by his perfunctory reply.
A slapdash plan won't succeed.
会議でおざなりな説明しかしなかった。
He only gave a half-hearted explanation at the meeting.
おざなり is a more colloquial word for a careless, half-hearted way of doing something, while 形式的 is a more neutral, formal-register term for lacking substance behind proper form.
Usually written in kana. The kanji forms お座なり, 御座なり, and お座成り exist but are less common.
Kanji form using 座 (seat/sitting) and なり (form/state). Less common than kana.
Variant kanji form using 成 (become). Rarely used.
Kanji form with honorific 御. Rarely used.
From お座なり, literally conduct or treatment suited to the immediate gathering or occasion. It came to describe something done only to satisfy the occasion, hence perfunctorily or half-heartedly.