Colossal.
ado
Large
Immense is a synonym for the word big. It begins with the letter i.
enorm
Full and fat are synonyms for big. They begin with F.
Big dipper is an outer space word. Black hole is another outer space word that begins with the letter b.
The 5 letter word that means the opposite of big and has a short vowel sound is "small."
huge
big box office film director
Large is a synonym for big. It begins with the letter l.
The word is "huge."