petoli

No suffix in sight. The -ol- in the middle is not an affix; Esperanto has no -ol-. Petol- is one root, and there is no peto hiding in it either, despite peti meaning to ask. Take the whole thing at once.

The happiest word in the band. Petoli is what children do when nobody is watching and nothing is broken yet: romping, larking about, getting into things. It is not naughtiness with malice in it, which would be malbonkonduti. The tone is affectionate, and adults use it about each other too, usually with a smile.

The family. Petola is playful or mischievous, petolulo is a rascal, petolaĵo is a prank or a piece of mischief, and petolema describes the child who is always inclined that way. Petolado is the romping considered as an activity, which is the word you want for a whole afternoon of it.

Where you will meet it in this course. The camp story for this chapter puts several tents in a field and then puts children between them, and this is the verb that does most of the work in the middle of it. Ludi is to play, which is calmer; salti is to jump; petoli is all of it at once, at volume.