The term 'keeping tabs on' is a phrase that means to watch or observe something closely. The crossword solutions for this term are 'EYEING' (6 letters), 'eying' (5 letters), and 'monitoring' (10 letters). All three words refer to the act of paying close attention to something, either visually or through other means. EYEING and eying are both forms of the verb 'to eye, ' which means to look at something intently. Monitoring is a more general term that can refer to any type of observation or surveillance.