KEY: Passive.
SYN: Inactive, inert, quiescent, unresisting, unquestioning,negative, enduring, patient.
ANT: Active, alert, resistant, positive, unsubmissive, malcontent,vehement, impatient.

• 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]
• Imperious
• Imperishable, [See PERISHABLE]
• Impermanence, [See PERMANENCE]
• Impermeable, [See PERMEABLE]
• Impersonal, [See PERSONAL]
• Impersonate
• Impertinent, [See PERTINENT]
• Imperturbable, [See PERTURB_and_STOICAL]
• Impervious, [See PERVIOUS]
• Impetrate
• Impetuous, [See HASTY]