強ふ

Japanese

⟨sipu⟩ → /ɕiɸu/ → /ɕifu/ → */ɕiwu/ → /ɕiu/

強ふ(しう) • (shiu) ^{←しふ (sifu)^?}transitive ^†nidan

Stem forms
Irrealis (未然形)	強ひ	しひ	sifi
Continuative (連用形)	強ひ	しひ	sifi
Terminal (終止形)	強ふ	しふ	sifu
Attributive (連体形)	強ふる	しふる	sifuru
Realis (已然形)	強ふれ	しふれ	sifure
Imperative (命令形)	強ひよ	しひよ	sifiyo
Key constructions
Negative	強ひず	しひず	sifizu
Contrasting conjunction	強ふれど	しふれど	sifuredo
Causal conjunction	強ふれば	しふれば	sifureba
Conditional conjunction	強ひば	しひば	sifiba
Past tense (firsthand knowledge)	強ひき	しひき	sifiki
Past tense (secondhand knowledge)	強ひけり	しひけり	sifikeri
Perfect tense (conscious action)	強ひつ	しひつ	sifitu
Perfect tense (natural event)	強ひぬ	しひぬ	sifinu
Perfect-continuative tense	強ひたり	しひたり	sifitari
Volitional	強ひむ	しひむ	sifimu

From a stem sip- possibly cognate with verb 癈ふ (sipu, “to lose function (said of body organs)”). (Can this⁽⁺⁾ etymology be sourced?)

強ふ (sipu) (kana しふ)

Stem forms
Irrealis (未然形)	強ひ	しひ	sifi
Continuative (連用形)	強ひ	しひ	sifi
Terminal (終止形)	強ふ	しふ	sifu
Attributive (連体形)	強ふる	しふる	sifuru
Realis (已然形)	強ふれ	しふれ	sifure
Imperative (命令形)	強ひよ	しひよ	sifiyo
Key constructions
Negative	強ひず	しひず	sifizu
Contrasting conjunction	強ふれど	しふれど	sifuredo
Causal conjunction	強ふれば	しふれば	sifureba
Conditional conjunction	強ひば	しひば	sifiba
Past tense (firsthand knowledge)	強ひき	しひき	sifiki
Past tense (secondhand knowledge)	強ひけり	しひけり	sifikeri
Perfect tense (conscious action)	強ひつ	しひつ	sifitu
Perfect tense (natural event)	強ひぬ	しひぬ	sifinu
Perfect-continuative tense	強ひたり	しひたり	sifitari
Volitional	強ひむ	しひむ	sifimu