The term 'to be specific' is often used to provide more detail or clarity in a conversation. This phrase can be broken down into three different crossword solutions: NAMELY, idest, and thatis. NAMELY is a 6-letter word meaning 'specifically, that is to say'. Idest is a 5-letter word meaning 'that is to say'. Lastly, thatis is a 6-letter word meaning 'NAMELY, that is to say'. All three of these words are synonyms for the phrase 'to be specific'.