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費やす

to spend

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Conjugation of 費やす

This verb follows the godan conjugation pattern.
私/俺
Present informal tense
費やす
tsuiyasu
I spend
Present informal negative tense
費やさない
tsuiyasanai
I don't spend
Present formal tense
費やします
tsuiyashimasu
I spend
Present formal negative tense
費やしません
tsen
I do not spend
私/俺
Past informal tense
費やした
tsuiyashita
I spent
Past informal negative tense
費やさなかった
tsuiyasanakatta
I didn't spend
Past formal tense
費やしました
tshita
I spend
Past formal negative tense
費やしませんでした
tsen deshita
I did not spend
私/俺
Imperative informal mood
費やせ
tsuiyase
spend
Imperative negative mood
費やすな
tsuiyasu na
don't spend
Imperative formal mood
費やしてください
tsuiyashite kudasai
please spend
Imperative formal negative mood
費やさないでください
tsuiyasanai dekudasai
please do not spend
私/俺
Te form - conjunctive stem
費やして
tsuiyashite
spend
Passive stem
費やされる
tsuiyasareru
spent
Hypothetical tense
費やせ
tsuiyase
if I spent
Hypothetical conditional stem
費やせば
tsuiyaseba
spent
私/俺
Volitional stem
費やそう
tsuiyasō
will spend
Potential stem
費やせる
tsuiyaseru
spent
Continuative stem
費やし
tsuiyashi
spending
Causative stem
費やさせる
tsuiyasaseru
allow to spend
私/俺
Imperfective stem
費やさ
tsuiyasa
spend

Examples of 費やす

You spend あなた 費やす your whole career あなたの キャリア全体 hoping someday いつか望み you'll get a red-letter case あなた 赤文字のケースを手に入れるだろう Something you can really make あなた 本当に作る できる何か a name for yourself with 自分のための名前

You spend your whole career hoping, someday, you'll get a red-letter case.

この猿に　国の金を 費やす　必要はない

Then there's no need to throw away the State's money on this mockery.

哲学の王 戦を生き延び 余生を人々の向上に 費やした

Philosopher king who survived a war, and spent the rest of his life working for the betterment of his people.