expression, suru verb (irregular)
leave behind; leave a place
Used when departing from a location or leaving something/someone behind. Often with を.
彼は故郷を後にして、東京へ向かった。
He left his hometown behind and headed for Tokyo.
私たちはホテルを後にした
We left the hotel.
expression, suru verb (irregular)
Used when delaying an action or decision to a later time. Often with を.
決断を後にするのはよくない。
It's not good to put off a decision.
彼は返事を後にした。
He postponed his reply.