Emily Dickinson Lexicon

impeach, v. [OFr empechier < L. impedicā-re, catch, entangle.]

1. Hinder the action, progress, or well being of; to blockade; to impede, impair, prevent.
2. Bring charge or accusation against; to accuse of treason; to discredit, disparage, to find fault with, to censure; [fig] faith.

impede (impeding), v. [L. impedīre, shackle the feet.]

Slow progression, obstruct advancement.

impediment, n. [L. impedimentum, hindrance.]

That which hinders progress and motion; [fig] an organic obstruction to ready or distinct speech; a stammer or stutter.

impel (-ed), v. [Fr. < L. impellěre.]

Drive or force to some action; to urge on or incite.

impending, verbal adj. [L. impend-ēre.]

Approaching; nearing; soon to occur.

imperative, adj. [L. imperātīvus, to command.]

Demanding obedience, execution, action, etc.; of the nature of a duty; obligatory.

imperator, n. [L. from imperāre, to command.]

Absolute ruler, emperor, commander, ruler.

imperceptible, adj. [Fr. < L. imperceptibilis.] (webplay: slow).

That by its nature cannot be perceived or discerned; so slight, gradual, subtle, or indistinct as not to be perceptible.

imperceptibly, adv. [see imperceptible, adj.]

In an imperceptible manner or degree; so as not to be perceived.

imperfect, adj. [Fr. imparfait < L. imperfectus, not finished.] (webplay: make).

Not finished, not complete; defective, faulty; not fully instructed or accomplished in.