有効に使う | Japanese meaning

にう【ゆうこうにつかう】

expressions (phrases, clauses, etc.); Godan verb with 'u' ending

expressions (phrases, clauses, etc.); Godan verb with 'u' ending

N43

意possess; have; exist; happen; occur; approx

訓あ.る

音ユウ、ウ

名あ、あら、あり、ある、くに、なお、ゆ

N25

意merit; efficacy; efficiency; benefit

訓き.く、ききめ、なら.う

音コウ

N43

意use; send on a mission; order; messenger; envoy; ambassador; cause

訓つか.う、つか.い、-つか.い、-づか.い

音シ