meddle vs step in

meddle and step in both are verbs.

Word	Noun	Adjective	Verb	Adverb
meddle	No	No	Yes	No
step in	No	No	Yes	No

As verbs, step in is a hypernym of meddle; that is, step in is a word with a broader meaning than meddle:

meddle: intrude in other people's affairs or business; interfere unwantedly
step in: get involved, so as to alter or hinder an action, or through force or threat of force

Other hypernyms of meddle include interfere, interpose, intervene.

meddle (verb)	step in (verb)
intrude in other people's affairs or business; interfere unwantedly	get involved, so as to alter or hinder an action, or through force or threat of force
	act as a substitute