肥やす

Japanese

Kanji in this term
肥
こ Grade: 5
kun’yomi

Pronunciation

• IPA^(key): [ko̞ja̠sɨᵝ]

Verb

肥(こ)やす • (koyasu) transitive godan (stem 肥(こ)やし (koyashi), past 肥(こ)やした (koyashita))

Japanese verb pair
active	肥やす
mediopassive	肥える

1. to fertilize

   痩(や)せた土地(とち)を肥(こ)やす

   yaseta tochi o koyasu

   to fertilize the infertile land

2. to fatten (livestock)

   豚(ぶた)を肥(こ)やす

   buta o koyasu

   to fatten the pigs

3. to bring unjust enrichment to; to benefit unfairly

   私(し)腹(ふく)を肥(こ)やす

   shifuku o koyasu

   to line one's pockets

4. to make perceptive/sensible

   舌(した)を肥(こ)やす

   shita o koyasu

   to make someone/oneself picky about food (lit. to make the tongue sensible)

5. (taking sensory organs such as 目(め) (me, “eyes”) as object) to enjoy sensually

Conjugation

Conjugation of "肥やす" (See Appendix:Japanese verbs.)

Katsuyōkei ("stem forms")
Mizenkei ("imperfective")	肥やさ	こやさ	koyasa
Ren’yōkei ("continuative")	肥やし	こやし	koyashi
Shūshikei ("terminal")	肥やす	こやす	koyasu
Rentaikei ("attributive")	肥やす	こやす	koyasu
Kateikei ("hypothetical")	肥やせ	こやせ	koyase
Meireikei ("imperative")	肥やせ	こやせ	koyase
Key constructions
Passive	肥やされる	こやされる	koyasareru
Causative	肥やさせる 肥やさす	こやさせる こやさす	koyasaseru koyasasu
Potential	肥やせる	こやせる	koyaseru
Volitional	肥やそう	こやそう	koyasō
Negative	肥やさない	こやさない	koyasanai
Negative continuative	肥やさず	こやさず	koyasazu
Formal	肥やします	こやします	koyashimasu
Perfective	肥やした	こやした	koyashita
Conjunctive	肥やして	こやして	koyashite
Hypothetical conditional	肥やせば	こやせば	koyaseba

Classical conjugation of "肥やす" (サ行四段活用, see Appendix:Japanese verbs.)

Stem forms
Irrealis (未然形)	肥やさ	こやさ	koyasa
Continuative (連用形)	肥やし	こやし	koyasi
Terminal (終止形)	肥やす	こやす	koyasu
Attributive (連体形)	肥やす	こやす	koyasu
Realis (已然形)	肥やせ	こやせ	koyase
Imperative (命令形)	肥やせ	こやせ	koyase
Key constructions
Negative	肥やさず	こやさず	koyasazu
Contrasting conjunction	肥やせど	こやせど	koyasedo
Causal conjunction	肥やせば	こやせば	koyaseba
Conditional conjunction	肥やさば	こやさば	koyasaba
Past tense (firsthand knowledge)	肥やしき	こやしき	koyasiki
Past tense (secondhand knowledge)	肥やしけり	こやしけり	koyasikeri
Perfect tense (conscious action)	肥やしつ	こやしつ	koyasitu
Perfect tense (natural event)	肥やしぬ	こやしぬ	koyasinu
Perfect-continuative tense	肥やせり 肥やしたり	こやせり こやしたり	koyaseri koyasitari
Volitional	肥やさむ	こやさむ	koyasamu

Synonyms

• (to fatten livestock): 肥(ひ)育(いく) (hīku)

Derived terms

• 肥(こ)やし (koyashi)