slow

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Not moving or able to move quickly; proceeding at a low speed.
• adjective Marked by a retarded tempo.
• adjective Taking or requiring a long time.
• adjective Taking more time than is usual.
• adjective Allowing movement or action only at a low speed.
• adjective Registering a time or rate behind or below the correct one.
• adjective Lacking in promptness or willingness; not precipitate.
• adjective Characterized by a low volume of sales or transactions.
• adjective Lacking liveliness or interest; boring.
• adjective Not having or exhibiting intellectual or mental quickness.
• adjective Only moderately warm; low.
• adverb So as to fall behind the correct time or rate.
• adverb At a low speed.
• intransitive verb To make slow or slower.
• intransitive verb To delay; retard.
• intransitive verb To become slow or slower.

from The Century Dictionary.

• Slowly.
• To become slow; slacken in speed.
• To make slow; delay; retard.
• To slacken in speed: as, to slow a locomotive or a steamer: usually with up or down.
• noun A Middle English spelling of slough.
• noun In zoöl, a sluggish or slow-paced skink, as the slow-worm or blindworm, Anguis fragilis; also, a newt or eft of like character.
• Taking a long time to move or go a short distance; not quick in motion; not rapid: as, a slow train; a slow messenger.
• Not happening in a short time; spread over a comparatively long time; gradual: as, a slow change; the slow growth of arts.
• Not ready; not prompt or quick; used absolutely, not quick to comprehend; dull-witted.
• Tardy; dilatory; sluggish; slothful.
• Not hasty; not precipitate; acting with deliberation.
• Behind in time; indicating a time earlier than the true time: as, the clock or watch is slow.
• Dull; lacking spirit; deficient in liveliness or briskness: used of persons or things: as, the entertainment was very slow.
• Synonyms Delaying, lingering, deliberate.
• 3 and
• Heavy, inert, lumpish.
• 1–4. Slow, Tardy, Dilatory. Slow and tardy represent either a fact in external events or an element of character; dilatory only the latter. Dilatory expresses that disposition or habit by which one is once or generally slow to go about what ought to be done. See idle.
• noun A sluggard.
• noun A Middle English preterit of slay.

from the GNU version of the Collaborative International Dictionary of English.

• imperative Slew.
• adverb Slowly.
• intransitive verb To go slower; -- often with up.
• transitive verb To render slow; to slacken the speed of; to retard; to delay.
• noun obsolete A moth.
• adjective Moving a short space in a relatively long time; not swift; not quick in motion; not rapid; moderate; deliberate.
• adjective Not happening in a short time; gradual; late.
• adjective Not ready; not prompt or quick; dilatory; sluggish.
• adjective Not hasty; not precipitate; acting with deliberation; tardy; inactive.
• adjective Behind in time; indicating a time earlier than the true time.
• adjective Not advancing or improving rapidly.
• adjective colloq. Heavy in wit; not alert, prompt, or spirited; wearisome; dull.
• adjective [Colloq.] a slow person. See def.7, above.