Godan verb with 'ru' ending, Transitive verb
to use up; to exhaust; to wear out
科学者の中には百年以内に世界の石油資源を使い切るだろうと予言する者もいる。Some scientists predict that the world oil reserves will be used up within a century.
Also written 使いきる【つかいきる】、遣い切る【つかいきる】
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