The aim of this work was to collect a body of evidence of the recategorization of mental verbs, and make an analysis of their meanings and grammar. The research showed that the most active in this respect were the verbs of perception. Depending on the grammatical and semantic co-text, the verbs of perception expressed a material, verbal, relational, existential or happening processes. The verbs of cognition were less active. Their secondary meanings often expressed the same process with a slight change of meaning. When recategorized, the verbs of cognition denoted material, existential, and verbal processes, as well as the processes of perception and affectivity. The verbs of affectivity were the least active. Most of them had only one or two meanings that denoted the same process.