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to spare; to grudge; to be sparing (with); to be frugal; to be stingy
to regret; to lament
to be reluctant (to do); to be unwilling
to value; to prize; to hold dear
彼は才能ある選手の引退を惜しんだ。
He lamented the retirement of the talented player.
卒業式で友人との別れを惜しんで涙を流す生徒たち。
I shed tears, reluctant to part.
時間を惜しんで勉強に励んでいる。
I'm studying hard, not wasting any time.