ymddwyn

Welsh

From ym- +‎ dwyn.

ymddwyn (first-person singular present ymddygaf)

Conjugation (literary)

	singular			plural			impersonal
	first	second	third	first	second	third	impersonal
present indicative/future	ymddygaf	ymddygi	ymddwg	ymddygwn	ymddygwch	ymddygant	ymddygir
imperfect (indicative/subjunctive)/ conditional	ymddygwn	ymddygit	ymddygai	ymddygem	ymddygech	ymddygent	ymddygid
preterite	ymddygais	ymddygaist	ymddygodd	ymddygasom	ymddygasoch	ymddygasant	ymddygwyd
pluperfect	ymddygaswn	ymddygasit	ymddygasai	ymddygasem	ymddygasech	ymddygasent	ymddygasid, ymddygesid
present subjunctive	ymddygwyf	ymddygych	ymddygo	ymddygom	ymddygoch	ymddygont	ymddyger
imperative	—	ymddwg	ymddyged	ymddygwn	ymddygwch	ymddygent	ymddyger
verbal noun	ymddwyn
verbal adjectives	ymddygedig ymddygadwy

Conjugation (colloquial)

Inflected colloquial forms	singular			plural
Inflected colloquial forms	first	second	third	first	second	third
future	ymddyga i, ymddygaf i	ymddygi di	ymddygith o/e/hi, ymddygiff e/hi	ymddygwn ni	ymddygwch chi	ymddygan nhw
conditional	ymddygwn i, ymddygswn i	ymddyget ti, ymddygset ti	ymddygai fo/fe/hi, ymddygsai fo/fe/hi	ymddygen ni, ymddygsen ni	ymddygech chi, ymddygsech chi	ymddygen nhw, ymddygsen nhw
preterite	ymddygais i, ymddyges i	ymddygaist ti, ymddygest ti	ymddygodd o/e/hi	ymddygon ni	ymddygoch chi	ymddygon nhw
imperative	—	ymddyga	—	—	ymddygwch	—
Note: All other forms are periphrastic, as usual in colloquial Welsh.

Welsh mutation
radical	soft	nasal	h-prothesis
ymddwyn	unchanged	unchanged	hymddwyn
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.