Feel in one's bones is an idiom that means to have a strong feeling or intuition about something without having any proof or evidence. The crossword solutions for this term are KNOW (4 letters), INTUIT (6 letters), and SENSE (5 letters). Knowing something implies having knowledge or facts, intuiting something suggests having an instinctive understanding, and sensing something implies having a feeling or awareness. Therefore, the phrase feel in one's bones can be interpreted as having a strong feeling or intuition about something without any proof or evidence.