tremendous (adj.)
- abysmal
- amazing
- appalling
- astounding
- astronomic
- astronomical
- awe-inspiring
- awesome
- awful
- boundless
- bulky
- colossal
- cosmic
- cracking
- dire
- direful
- divine
- dread
- dreaded
- dreadful
- elephantine
- enormous
- epic
- exquisite
- extensive
- fantastic
- fell
- formidable
- frightful
- galactic
- ghastly
- ghoulish
- giant
- gigantic
- gilt-edged
- glorious
- golden
- grim
- grisly
- gruesome
- heavenly
- heroic
- hideous
- horrendous
- horrible
- horrid
- horrific
- horrifying
- huge
- immeasurable
- immense
- infinite
- jumbo
- king-size
- large
- macabre
- magnificent
- mammoth
- marvelous
- massive
- mighty
- monstrous
- monumental
- morbid
- mortal
- mountainous
- outsize
- overgrown
- prodigious
- profound
- redoubtable
- sensational
- shocking
- sizable
- spacious
- splendid
- splendiferous
- sterling
- stupendous
- super
- superb
- superfine
- terrible
- terrific
- titanic
- towering
- vast
- voluminous
- weighty
- wonderful
