What does the suffix -ic mean in the word rhythmic? (The crowd danced to the rhythmic beat of the music)

Saved in marigolds, what do the following lines from the passage mainly reveal about lizabeth? suddenly i was ashamed, and i did not like being ashamed. the child in me sulked and said it was all in fun, but the woman in me flinched at the thought of the malicious attack that i had led.