KEY: Imperceptible, [See PERCEPTIBLE].

• Impalpable, [See PALPABLE]
• Imparity, [See PARITY]
• Impartial, [See PARTIAL]
• Impart, [See GIVE]
• Impassable, [See PASSABLE]
• Impassible
• Impassioned
• Impassive, [See IMPASSIONED]
• Impatient, [See PATIENT], Impawn, [See PAWN]
• Impeach
• Impeccability, [See PECCABILITY]
• Impede, [See ACCELERATE]
• Impediment
• Impel, [See URGE]
• Impend
• Impenetrable, [See PENETRABLE]
• Impenitent, [See PENITENT]
• Imperative
• Imperceptible, [See PERCEPTIBLE]
• Impercipient, [See PERCIPIENT]
• Imperfection
• Imperfect, [See PERFECT]
• Imperforate, [See PERFORATE]
• Imperial
• Imperil, [See ENDANGER]