We don't have synonyms for pantos yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are pants, pontos and panto.
(n) :
(British, informal) Clipping of pantomime. [(now rare) A Classical comic actor, especially one who works mainly through gesture and mime.]
(n) :
(countable, rail transport, informal) Clipping of pantograph. [A mechanical linkage based on parallelograms causing two objects to move in parallel; notably as a drawing aid.]
(n) :
(British, informal) Clipping of pantomime. [(now rare) A Classical comic actor, especially one who works mainly through gesture and mime.]
(n) :
(countable, rail transport, informal) Clipping of pantograph. [A mechanical linkage based on parallelograms causing two objects to move in parallel; notably as a drawing aid.]