tre·men·dous
trəˈmendəs : adjective
very great in amount, scale, or intensity.
"Jenny put in a tremendous amount of time"
synonyms: huge, enormous, immense, colossal, massive, prodigious, stupendous, monumental, mammoth, vast, gigantic, giant, mighty, epic, titanic, towering, king-size(d), jumbo, gargantuan, Herculean;
antonyms: tiny, small, slight, soft
informal use: extremely good or impressive; excellent.
"the crew did a tremendous job"
synonyms to the informal: excellent, splendid, wonderful, marvelous, magnificent, superb, sublime, lovely, delightful, too good to be true;
antonyms to the informal: bad, poor