Matching Pairs Phrasal verbs and vocabOnline version Vocabulary (B2-C1) by Emilie Hines 1 significant change that often causes problems 2 You know or have access to something that can be useful to you. 3 to stop holding something or someone: 4 to think that a belief or opinion is probably correct 5 a large increase in activity or in the level of something 6 uncertain with no final decision. 7 to explain or describe something in a clear and detailed way Armed with up in the air upheaval let go of Ramp up Incline to/towards lay out