IMPUGNER
Im*pugn"er, n.
Defn: One who impugns.
IMPUGNMENT
Im*pugn"ment, n.
Defn: The act of impugning, or the state of being impugned. Ed. Rev.
IMPUISSANCE
Im*pu"is*sance, n. Etym: [Cf. F. impuissance.]
Defn: Lack of power; inability. Bacon.
Their own impuissance and weakness. Holland.
IMPUISSANT
Im*pu"is*sant, a. Etym: [F., fr. pref. im- not + puissant. See
Puissant.]
Defn: Weak; impotent; feeble.
IMPULSE
Im"pulse, n. Etym: [L. impulsus, fr. impellere. See Impel.]
1. The act of impelling, or driving onward with sudden force; impulsion; especially, force so communicated as to produced motion suddenly, or immediately. All spontaneous animal motion is performed by mechanical impulse. S. Clarke.