The term 'LITTLE MONSTER' can be broken down into two words: 'LITTLE' and 'MONSTER'. The crossword solutions for these words are 'BRAT' (4 letters) and 'IMP' (3 letters). A 'BRAT' is a term used to describe a mischievous child who behaves badly, while an 'IMP' is a small, mischievous creature from folklore. Together, these two words form the phrase 'LITTLE MONSTER', which is often used to describe a young child who is mischievous and behaves badly.