"it was great to meet old friends again"

• returning to a previous position or condition

  "he rose, tidied the bed, and sat down again"

• in addition to what has already been mentioned

  "the wages were low but they made half as much again in tips"

• used to introduce a further point for consideration, supporting or contrasting with what has just been said

  "I never saw any signs, but then again, maybe I wasn't looking"

• used to ask someone to repeat something

  "what was your name again?"