tremendous tremendous /trɪˈmɛndəs/

adjective

1. () Extraordinarily large in size, extent, amount, power or degree  ( ginormous [Informal, British] , enormous , tremendous )
   extraordinarily large in size, extent, amount, power or degree
    An enormous boulder
   an enormous boulder
    Enormous expenses
   enormous expenses
    Tremendous sweeping plains
   tremendous sweeping plains
    A tremendous fact in human experience; that a whole civilization should be dependent on technology
   a tremendous fact in human experience; that a whole civilization should be dependent on technology
    A plane took off with a tremendous noise
   a plane took off with a tremendous noise
   
2. () Extraordinarily good or great; used especially as intensifiers  ( grand , howling , marvellous , fantastic , marvelous , rattling , terrific , tremendous , wondrous , wonderful )
   extraordinarily good or great; used especially as intensifiers
    A fantastic trip to the Orient
   a fantastic trip to the Orient
    The film was fantastic!
   the film was fantastic!
    A howling success
   a howling success
    A marvelous collection of rare books
   a marvelous collection of rare books
    Had a rattling conversation about politics
   had a rattling conversation about politics
    A tremendous achievement
   a tremendous achievement
   
3. Extreme in degree, extent, amount or impact  ( awful , terrible , tremendous , frightful )
   extreme in degree, extent, amount or impact
    In a frightful hurry
   in a frightful hurry
    Spent a frightful amount of money
   spent a frightful amount of money