おお〔大〕 〈接頭詞〉1. Large (river); great (fire); gross (mistake); loud (voice); arrant (knave); egregious (ass); rank (nonsense); notorious (robber); bouncing (lie); severe (earthquake); heavy (rain) ◆大河　a large river ◆大火事　a great fire ◆大当たり　a great hit ◆大雨　a heavy rain ◆大嵐　a severe storm ◆大風　a gale―a hurricane ◆大地震　a great earthquake―a severe earthquake ◆大間違い　a gross mistake ◆大悪党　an arrant knave ◆大ばか者　an arrant fool―an egregious ass―a holy imbecile ◆大泥棒　a notorious robber ◆大嘘　a bouncing lie ◆(着物に構わないどころか)大洒落者だ　He is a positive dandy. ◆大西郷　Saigo senior 2. ◆(君はあの人を知っているかと問われて)大知りさ(あれは僕の小父だものなど)　Yes, rather―I should rather think so. ◆(あの人は金があるかと問われて)大有りさ　Yes, rather―I should rather think so.