iacháu

Welsh

From iach (“healthy”) +‎ -áu.^[1]

iacháu (first-person singular present iachaf)

Conjugation (literary)

	singular			plural			impersonal
	first	second	third	first	second	third	impersonal
present indicative/future	iachâf	iachei	iachâ	iachawn	iachewch	iachânt	iacheir
imperfect (indicative/subjunctive)/conditional	iachawn	iachait	iachâi	iachaem	iachaech	iachaent	iacheid
preterite	iacheais	iacheaist	iachaodd	iachasom	iachasoch	iachasant	iachawyd
pluperfect	iachaswn	iachasit	iachasai	iachasem	iachasech	iachasent	iachasid, iachesid
present subjunctive	iachawyf	iacheych	iachao	iachaom	iachaoch	iachaont	iachaer
imperative	—	iachâ	iachaed	iachawn	iachewch	iachaent	iachaer
verbal noun	iacháu
verbal adjectives	iachedig iachadwy

Conjugation (colloquial)

Inflected colloquial forms	singular			plural
Inflected colloquial forms	first	second	third	first	second	third
future	iachâ i	iachai di	iachaith o/e/hi, iachaiff e/hi	iachawn ni	iachawch chi	iachân nhw
conditional	iachawn i, iachaswn i	iachaet ti, iachaset ti	iachâi fo/fe/hi, iachasai fo/fe/hi	iachaen ni, iachasen ni	iachaech chi, iachasech chi	iachaen nhw, iachasen nhw
preterite	iachaes i	iachaest ti	iachaodd o/e/hi	iachaon ni	iachaoch chi	iachaon nhw
imperative	—	iachâ	—	—	iachawch	—
Note: All other forms are periphrastic, as usual in colloquial Welsh.

Mutated forms of *iacháu*
radical	soft	nasal	h-prothesis
iacháu	unchanged	unchanged	hiacháu

Note: Certain mutated forms of some words can never occur in standard Welsh.
All possible mutated forms are displayed for convenience.

^ R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “iachâf”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies