TOT Watcher is a term used to describe someone who looks after young children. The three crossword solutions for this term are SITTER (6 letters), NANA (4 letters), and NANNY (5 letters). A SITTER is someone who looks after children for a short period of time, usually in the evening or overnight. A NANA is an affectionate term for a grandmother, often used to refer to a grandmother who looks after her grandchildren. A NANNY is a professional caregiver who looks after children full-time.