taro'r tant mawr

Welsh

Etymology

Literally “to hit the big note”.

Verb

taro'r tant mawr (first-person singular present trawaf y tant mawr)

  1. (idiomatic) to ride the high horse, to be arrogant
    Synonym: bod ar gefn ei geffyl

Further reading

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