hymnography/himʹnogrəfi/ noun

• imperator
• imperceptible
• imperceptive
• impercipient
• imperfect
• imperfection
• imperfective
• imperforate
• imperial
• imperial gallon
• imperialism
• imperil
• imperious
• imperishable
• imperium
• impermanent
• impermeable
• impersonal
• impersonalize
• impersonate
• impertinent
• imperturbable
• impervious
• impetigo
• impetuous