emperish /im-perˈish/ (Spenser, etc)

To impair

• unpowdered
• unpracticable
• unpractical
• unpracticalities
• unpracticality
• unpractically
• unpractised
• unpractisedness
• unpractisednesses
• unpraise
• unpraised
• unpraises
• unpraiseworthy
• unpraising
• unpray
• unprayed
• unpraying
• unprays
• unpreach
• unpreached
• unpreaches
• unpreaching
• unprecedented
• unprecedentedly
• unprecise