1 adverb with regrethe talked regretfully about the pastlabhair sé go haiféalach faoin am a chuaigh thart, labhair sé faoin am atá caite agus aithreachas air2 adverb unfortunatelyar an drochuair c m uregretfully, we can't do itar an drochuair, ní féidir linn é a dhéanamh