1) Inferior rhymer 2) Inferior rhymer of verses 3) Play by Ben Jonson 4) Rhymester 5) Writer of inferior verse 1) Versemonger 
Poetaster, like rhymester or versifier, is a contemptuous name often applied to bad or inferior poets. Specifically, poetaster has implications of unwarranted pretentions to artistic value. The word was coined in Latin by Erasmus in 1521. It was first used in English by Ben Jonson in his 1600 play Cynthia`s Revels; immediately afterwards Jonson c....
petty poet; writer of contemptible verses
'A vile petty poet' (Samuel Johnson, 1755).
• (n.) An inferior rhymer, or writer of verses; a dabbler in poetic art.
A vile petty poet (samuel johnson, 1755).
Po'et·as`ter noun An inferior rhymer, or writer of verses; a dabbler in poetic art. « The talk of forgotten poetasters .» Macaulay. 
An inferior poet. See doggerel.
poetaster 1. An inferior poet; an inferior rhymer, or writer of verses. 2. A dabbler in poetic art; a writer of indifferent verse. 3. A petty or paltry poet; a writer of poor or trashy verse; a rimester.