The term 'really big' can be described by a variety of words, such as 'TITANIC' (7 letters), 'IMMENSE' (7 letters), 'GIGANTIC' (8 letters), 'VAST' (4 letters), 'GIANT' (5 letters), and 'OBESE' (5 letters), as well as 'ENORMOUS' (8 letters). All of these words refer to something that is exceptionally large in size or scope. The TITANIC, for example, was an IMMENSE ocean liner that was considered one of the largest ships ever built. Similarly, GIGANTIC and ENORMOUS are often used to describe something that is much larger than average. VAST and GIANT are also used to describe something that is very large, while OBESE is used to describe something that is excessively large.