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) (idiomatic) to ride the high horse, to be arrogant Synonym: bod ar gefn ei geffyl ==== Related terms ==== taro tant (“to strike a chord”) === 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