Phrasal verbs can be a very confusing part of learning English. We have a comprehensive Phrasal Verb Guide on the site, with definitions of 700 phrasal verbs and over 1000 examples. The particle can change the meaning of the verb completely, e.g.: look up – consult a reference book (look a word up in a dictionary). Look for – seek (look for her ring). Look forward – anticipate with pleasure (look forward to meeting someone).