adj. 25B6; adjective
a terrific bang : TREMENDOUS, huge, massive, gigantic, colossal, mighty, great, prodigious, formidable, sizeable, considerable; intense, extreme, extraordinary; informal mega, whopping great, humongous; Brit. informal whacking great, ginormous.
(informal) a terrific game of top-quality football : MARVELLOUS, wonderful, sensational, outstanding, superb, excellent, first-rate, first-class, dazzling, out of this world, breathtaking; informal great, fantastic, fabulous, fab, mega, super, ace, magic, cracking, cool, wicked, awesome; Brit. informal brilliant, brill, smashing; Austral./NZ informal bonzer; Brit. informal, dated spiffing.
(archaic) terrific scenes of slaughter and destruction : DREADFUL, terrible, appalling, awful, horrific, horrible, horrendous, horrifying, hideous, grim, ghastly, gruesome, frightful, fearful.