Felt in one's bones is an idiom that means to have a strong feeling or intuition about something without any concrete evidence. The crossword solutions for this term are SENSED (6 letters), KNEW (4 letters), and HADAHUNCH (9 letters). Sensed implies that the feeling was subtle and not necessarily conscious, while knew implies that the feeling was more certain and conscious. Hadahunch suggests that the feeling was strong and intuitive.