Phrasal verbs consists of a basic verb + another word or words. The two or three words that make up a phrasal verb form a short 'phrase' - which is why we call them 'phrasal verbs'.
Phrasal Verb:
bust someone up
Meaning / Example:
1. Sl. to cause lovers to separate; to break up a pair of lovers, including married persons. (Bust is a nonstandard form of burst meaning ‘break (apart)' here.) > Mary busted Terri and John up.
2. Sl. to beat someone up; to batter someone. (Bust is a nonstandard form of burst meaning ‘hit' here.) > You want me to bust you up?
Phrasal verbs are multi-word verbs that, like single-word verbs, convey action of the body or mind or occurrences. Phrasal verbs consist of a basic verb + another word or words, usually a preposition or adverb. Example: speak (basic verb) + up (preposition)