long ago adjective 1adverb 1long-ago noun 1forms 2 adjective1 •Existing in the relatively distant past. adverb1 •At a time in the past, especially the distant past.There was a Roman fort here long ago.How long ago did she die? It's not that long ago that she did. long-ago noun1 •The distant past; the days of yore.He cast his time into the long-ago, because already the long-ago had a special poetical attraction. — 1936 formslonger ago · longest ago