This wordlist is generally used by students preparing for GRE.
Short Definition : unshakably calm; placid
Short Definition : impenetrable; incapable of being damaged or distressed; incapable of being affected (in one's opinions); Ex. impervious to water/criticism
Short Definition : violent; hasty; rash; impulsive; without careful thought; Ex. impetuous decision
Short Definition : moving force; momentum; force of a moving body; incentive; stimulus; impulse
Short Definition : irreverence; lack of respect for God or piety
Short Definition : infringe; encroach; influence; touch; collide with; Ex. The effects are impinging on every aspect of our lives.
Short Definition : irreverent
Short Definition : incapable of being pacified; impossible to appease; Ex. implacable enemy
Short Definition : unlikely (to be true); unbelievable; Ex. implausible alibi
Short Definition : put into effect; enforce; carry out; supply with tools; Ex. implement the plan/suggestion; N: tool or instrument