regurgitation (n.)

• backflow
• backwash
• backwater
• barf
• countercurrent
• disgorgement
• doubling
• duplication
• echo
• eddy
• gulf
• heaves
• heaving
• imitation
• maelstrom
• nausea
• plagiarism
• puke
• quotation
• reappearance
• rebirth
• recurrence
• reduplication
• reflux
• reincarnation
• renewal
• repetition
• reproduction
• resumption
• return
• swirl
• twirl
• vomit
• vomiting
• vortex
• whirl
• whirlpool