三さん文もん役やく者しゃ

Meanings

1

noun

third-rate actor; ham actor

Derogatory term for an actor of very low skill or status. 三文 (three mon) implies something cheap or worthless.

someone, person

三さん文もん
三文 means 'three mon' (a small amount of money) and is used as a prefix meaning cheap, worthless, or third-rate. 三文役者 is a compound using this prefix.
役やく者しゃ
役者 is a general word for actor or performer. 三文役者 specifically denotes a low-quality actor.

Compound of 三文 (three mon, a trifling sum) and 役者 (actor). The expression likens a poor actor to something worth only a few coins.