napsauttelu
Napsauttelu is a Finnish noun describing the act or habit of producing snapping sounds, usually by snapping the fingers. The word is formed from the verb napsauttaa, meaning to snap or click, with the nominalizing suffix -tel- and the -u- ending that marks a process or activity. It is used in everyday language to refer to both the physical action and the broader pattern of snapping sounds in various contexts, such as music, conversation, or as a nervous tic.
In practice, napsauttelu typically denotes snapping fingers to keep rhythm, to punctuate speech, or as a decorative
Variants include napsautus for a single snap, and less commonly naksuttelu for general clicking or creaking