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See also: Croesi and Crœsi



From croes (cross) +‎ -i.



croesi (first-person singular present croesaf) (transitive, intransitive)

  1. to cross
    1. to traverse; to go or cut across; to make or place crosswise; to make like a cross; to mark with a cross
    2. to cross out, erase, cancel
  2. to make the sign of the cross, mark or sign with a cross; to bless; to defend, protect
  3. to crucify
  4. to oppose, withstand, encounter; to contradict; to offend
  5. to cross-breed; to cross-fertilize; to cross-pollinate


Derived terms[edit]

  • croesiad m (crossing; crucifixion; crossing with the sign of the cross; adverse circumstance; cross-breeding)


Welsh mutation
radical soft nasal aspirate
croesi groesi nghroesi chroesi
Note: Some of these forms may be hypothetical. Not every
possible mutated form of every word actually occurs.


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