費ついやす

つ

い

や

す

Common wordJLPTN2Freq.FrequencyTop 10,000

費やす · godan verb (-su)

Form	Positive	Negative
Dictionary	費ついやす	費ついやさない
Polite	費ついやします	費ついやしません
Past polite	費ついやしました	費ついやしませんでした
Past	費ついやした	費ついやさなかった
Te-form	費ついやして	費ついやさないで
Desire	費ついやしたい	費ついやしたくない
Potential	費ついやせる	費ついやせない
Passive	費ついやされる	費ついやされない
Causative	費ついやさせる	費ついやさせない
Causative passive	費ついやさせられる	費ついやさせられない
Volitional	費ついやそう
Polite volitional	費ついやしましょう
Imperative	費ついやせ	費ついやすな
Conditional	費ついやせば	費ついやさなければ
Tara conditional	費ついやしたら	費ついやさなかったら

Meanings

godan verb (-su), transitive verb

spend; expend; consume

Neutral use for spending money, time, effort, or resources. Often implies intentional allocation.

彼かれは研けん究きゅうに多おおくの時じ間かんを費ついやした。
He spent a lot of time on his research.
このプロジェクトに予よ算さんの大たい半はんを費ついやすことになった。
We ended up spending most of the budget on this project.

godan verb (-su), transitive verb

waste; squander; throw away

Negative nuance: spending carelessly or on something worthless. Often used with 無駄に.

彼かれはギャンブルで全ぜん財ざい産さんを費ついやした。
He squandered his entire fortune on gambling.
そんなことに時じ間かんを費ついやすのは無む駄だだ。
It's a waste to spend time on such things.

godan verb (-su), transitive verb

devote; dedicate

Positive nuance: giving time, effort, or life to a worthy cause or purpose. Often used with ～に一生を費やす.

彼かの女じょは教きょう育いくに一いっ生しょうを費ついやした。
She devoted her life to education.
彼かれはこの問もん題だいの解かい決けつに全ぜん力りょくを費ついやした。
He devoted all his energy to solving this problem.

See all 75 example sentences ›

Usage patterns

〈時じ間かん〉を〈事こと〉に費ついやすto spend time on something
彼かれは研けん究きゅうに多おおくの時じ間かんを費ついやした。
He spent a lot of time on his research.
無む駄だに〈物もの〉を費ついやすto waste something carelessly
貴き重ちょうな資し源げんを無む駄だに費ついやしてしまった。
We ended up wasting precious resources.
〈事こと〉に一いっ生しょうを費ついやすto devote one's whole life to something
彼かれはその研けん究きゅうに一いっ生しょうを費ついやした。
He devoted his entire life to that research.
〈数かず〉年ねんを費ついやすto spend a number of years on something
このプロジェクトに三さん年ねんを費ついやした。
We spent three years on this project.

Expressions

金かねを費ついやすspend money; expend money

Kanji

費expense, cost, spend

Related words· 8

使つかうN5sense 1
使う is the general, everyday word for 'use' or 'spend', while 費やす specifically emphasizes consuming a resource, often on a larger or more deliberate scale.
消しょう費ひN3sense 1
消費する is a more technical term for consuming goods, energy, or money, while 費やす can also apply to abstract resources like time and effort.
浪ろう費ひN1sense 2
浪費する always carries a negative sense of wasteful spending, matching the 'waste; squander' meaning of 費やす.
捧ささげるN1sense 3
捧げる means to dedicate oneself or one's life to something worthy, close to the positive 'devote' sense of 費やす.

Show 4 more

過すごすN4
費やす stresses using up time, money, or effort on something, while 過ごす simply means letting a period of time pass in some way.
注つぎ込こむ
費やす focuses on spending or using up time, money, or effort, while 注ぎ込む emphasizes a continuous, generous flow into a target.
要ようするN1
費やす emphasizes actively spending or expending time/effort, whereas 要する simply states that something requires that amount.
注そそぎ込こむ
費やす means to spend or use up time, money, or effort, while 注ぎ込む focuses on the image of directing that resource intensively into a target.

Opposites

節せつ約やくN3sense 1
節約する means to save or economize resources, the opposite of 費やす's sense of spending or using them up.

Written forms

費ついやすUsage84%
Standard kanji spelling; high priority.
費ついやすUsage9%
search-only kanji form
Search-only kanji form; not recommended for active use.
ついやすUsage6%

Etymology

Compound of 費 (expense, cost) and やす (verb-forming suffix). The exact derivation of やす is uncertain, but it appears in other verbs like 冷やす (to cool).