poltergeist /pōlˈ or polˈtər-gīst/

1. A mysterious invisible force asserted to throw or move things about
2. A noisy ghost

• motivation research
• motivations
• motivator
• motivators
• motive
• motived
• motiveless
• motivelessly
• motivelessness
• motivelessnesses
• motive power
• motives
• motivic
• motiving
• motivities
• motivity
• motley
• motleyer
• motleyest
• motley-minded
• motleys
• motlier
• motliest
• motmot
• motmots