The Question and Answer section for Pygmalion is a great resource to ask questions, find answers, and discuss the novel.
Mrs. Pearce has just heard Eliza use a questionable word that she is sure was picked up from Higgins. She corrects Higgins for using improper language..... he justifies it as alliteration..... or a mere case of repetition.
Higgin's (Act II)
Oh, that! Mere alliteration, Mrs. Pearce, natural to a poet.
Did you have a question about the quote above?
Eliza wants to do better with her life than selling flowers on the street.