A phrasal verb is a combination of words that takes on unique meaning. Because they have little to do with the words they are made of, they can be confusing to those learning English. The majority of phrasal verbs are slang and occur most frequently in spoken English, so meanings can usually be determined by the conversation, but an online phrasal verbs dictionary is helpful. Some phrasal verbs in English routinely appear in online phrasal verbs lists; these 15 are handy to know.