1 adjective very great, intensean- pref c m uas cuimse c m uit was a tremendous blowbuille mór millteach a bhí annthey had tremendous respect for herbhí an-mheas go deo acu uirthithere's a tremendous rise in the number of people emigratingtá méadú as cuimse ar an líon daoine atá ag dul ar imirce2 adjective informal very good, fantasticiontach adj1 c m uthar cionn c m uar fheabhas c m uyou've done a tremendous jobtá jab iontach déanta agaibh, tá obair éachtach déanta agaibhthe whole day was a tremendous successd'éirigh thar barr leis an lá ar fad, d'éirigh thar cionn leis an lá ar fadthat's absolutely tremendous!tá sé sin go hiontach ar fad!, tá sé sin thar cionn ar fad!, tá sé sin ar fheabhas!