tyfu

Welsh

Etymology

From Proto-Brythonic *tüβ̃id, from Proto-Celtic *tumīti, ultimately from Proto-Indo-European *tum-.

Pronunciation

Verb

tyfu (first-person singular present tyfaf)

  1. (intransitive) to grow (become bigger in size)
  2. (transitive) to grow, to cultivate
  3. (intransitive) to grow, to increase, to rise
    Synonym: cynyddu

Conjugation
Conjugation (literary)
singular plural impersonal
first second third first second third
present indicative/future tyfaf tyfi tyf, tyfa tyfwn tyfwch tyfant tyfir
imperfect (indicative/subjunctive)/
conditional		 tyfwn tyfit tyfai tyfem tyfech tyfent tyfid
preterite tyfais tyfaist tyfodd tyfasom tyfasoch tyfasant tyfwyd
pluperfect tyfaswn tyfasit tyfasai tyfasem tyfasech tyfasent tyfasid, tyfesid
present subjunctive tyfwyf tyfych tyfo tyfom tyfoch tyfont tyfer
imperative — tyf, tyfa tyfed tyfwn tyfwch tyfent tyfer
verbal noun tyfu
verbal adjectives tyfadwy
Conjugation (colloquial)
Inflected colloquial forms singular plural
first second third first second third
future tyfa i, tyfaf i tyfi di tyfith o/e/hi, tyfiff e/hi tyfwn ni tyfwch chi tyfan nhw
conditional tyfwn i, tyfswn i tyfet ti, tyfset ti tyfai fo/fe/hi, tyfsai fo/fe/hi tyfen ni, tyfsen ni tyfech chi, tyfsech chi tyfen nhw, tyfsen nhw
preterite tyfais i, tyfes i tyfaist ti, tyfest ti tyfodd o/e/hi tyfon ni tyfoch chi tyfon nhw
imperative — tyfa — — tyfwch —
Note: All other forms are periphrastic, as usual in colloquial Welsh.

Derived terms
  • tyfiant (“growth; tumour”)
  • tyfwr (“grower”)
  • twf (“growth”)

Mutation
Welsh mutation
radical soft nasal aspirate
tyfu dyfu nhyfu thyfu
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

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