rately. More than usual; beyond the ordinary.

Immemorial. From very ancient times.

Imperfect. Not in the best condition.

Impetuous. Hastily; without considering consequences.

Impulse. A sudden mental motion or feeling.

Insecurity. Not sure of safety.

Intervening. Placed between; something between.

Instrumentality. By the agency of; by means of which it is
accomplished.

Insidious. Doing or planning a thing without the knowledge of
the victim.

Intact. Unbroken; whole; in good condition.

Instinct. A knowledge which comes from the internal senses.

Interval. Not continuous; having spaces or periods between.

Indented. To cut into or to notch.

Intimately. Closely associated; friendly.

Irrigating. To cover the ground with moisture by artificial
methods.

Infectious. Transmitting diseases by passing from one to
another; catching.

Identified. Pointed out; knowledge from some mark or otherwise.

Incandescent. Heated up so that it has illuminating qualities.

Innumerable. Without number. A large quantity; a great many.

Lavished. Given out without stint; liberal.

Laboratory. A workshop; a testing room; experimental works.

Leavened. The term used to indicate the raising of dough.

Lentils. A kind of greens, largely used in Europe.

Lumbering. Clumsily; huge; encumbered by bulk.

Ludicrous. Amusing; calculated to amuse.

Luxuries. Extravagant indulgences in pleasures.

Mineralogical. Pertaining to mines, ores, and similar arts.

Manifest. Made known; acknowledged; understood.

Neutralize. Made unlike either; the effect of uniting an acid
and an alkali.

Nitrogen. One of the four principal elements. The lightest of
all substances.

Nutrition. Food; the substance which is required for the
sustenance of plants or animals.

Observant. Noticing; seeing; taking note of.

Obstructions. In the way of; impediments.

Octave. Composed of eight. A musical measure or scale.

Odor. The quality in a substance which ren