Is squirming an onomatopoeia

No, "squirming" is not an onomatopoeia. It is a verb that describes the action of wriggling or moving with difficulty, typically in a way that suggests discomfort or nervousness. Onomatopoeia refers to Words that phonetically imitate or resemble the sound they describe, such as "buzz" or "sizzle." While "squirming" evokes a sense of movement, it does not mimic a sound.