What is an irregular meter in poetry and what is the difference between irregular and regular rhyme schemes?

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I came across the term "irregular rhyme" while searching for the definition of "doggerel."How are these terms used in the literary sense?

A Shakesperian sonnet with line endings AAB CCB DDE FFE is notIrregular rhyme, it means something which does not fit into any repetitive rhyming sequence.Is a limerick a regular?

Regular rhyme just means "fitting with the rule of an established rhyme pattern".It's regular if a person can anticipate the end of a line.The Assumption Song is an example of a subversion of this.

An irregular rhyme can sometimes mean a poem with an irregular meter.Regular just means what people expect.The meter is just which set of syllables are unstressesd and which aren't.A limerick goes something like this.

Doggerel is used by poets to describe poetry that doesn't follow the traditional rules of meter and rhyme.

Doggerel means any poetry which is not intended to be judged for its artistry or high-minded ideas.

Casually-written limericks are often called doggerel if their main point is bawdy humor rather than artistry.Children's school-yard chants and nursery rhymes are the same.

In the same way as calligraphers might refer to their own work as "chicken-scratch", poets sometimes use self-effacingly to describe their work.

Rules for how the last of the lines of a poem rhyme are included in some forms of poetry.The letters indicate these.An Italian sonnet starts with two quatrains, each with a pattern.

The first and fourth lines rhyme, but the second and third lines have a different sound.In poems with an irregular rhyme, the rhyming lines do not form a pattern like the above one.