The term 'I ___ IT' can be solved by the crossword solutions 'DOUBT' (5 letters) and 'KNEW' (4 letters). The phrase 'I ___ IT' is a common expression used to express uncertainty or hesitation about something. The word 'DOUBT' implies that one is uncertain or unsure about something, while the word 'knew' implies that one is certain or confident about something. Therefore, the phrase 'I ___ IT' can be interpreted as expressing uncertainty or hesitation about something.