Definition of up:

• Aloft; on high; in a direction contrary to that of gravity; toward or in a higher place or position; above; -- the opposite of down.
• From a lower to a higher position, literally or figuratively; as, from a recumbent or sitting position; from the mouth, toward the source, of a river; from a dependent or inferior condition; from concealment; from younger age; from a quiet state, or the like; -- used with verbs of motion expressed or implied.
• The state of being up or above; a state of elevation, prosperity, or the like; -- rarely occurring except in the phrase ups and downs.
• From a lower to a higher place on, upon, or along; at a higher situation upon; at the top of.
• From the coast towards the interior of, as a country; from the mouth towards the source of, as a stream; as, to journey up the country; to sail up the Hudson.
• Upon.
• To a higher place on; as, toward the source of; as, up the river.
• From a lower to a higher point or place.
• At, on, or near a higner place or part of.
• From a lower to a higher place.
• From a lower place or position to a higher; not down.
• Fortunate occurrences: used only in the expression ups and downs.
• The state of being up or above; a state of elevation, prosperity, or the like; - rarely occurring except in the phrase ups and downs.
• That which is up; chiefly in the phrase ups and downs.
• Arise; raise up.
• spatially or metaphorically from a lower to a higher position; " look up!"; " the music surged up"; " the fragments flew upwards"; " prices soared upwards"; " upwardly mobile"
• to a more central or a more northerly place; " was transferred up to headquarters"; " up to Canada for a vacation"
• to a higher intensity; " he turned up the volume"
• To or in a state of completion; completely; wholly; quite; as, in the phrases to eat up; to drink up; to burn up; to sum up; etc.; to shut up the eyes or the mouth; to sew up a rent.
• Aside, so as not to be in use; as, to lay up riches; put up your weapons.
• Aloft; on high; in a direction contrary to that of gravity; toward or in a higher place or position; above; - the opposite of down.
• Higher in motion, direction, or position: into being or action; as, to start up an argument; into notice; completely or to a finished state; as, to bring up a child; not behind or worse than: with to or with; as, to keep up with the times; away or in safety.
• Toward a higher place: a loft: on high: from a lower to a higher position, as out of bed, above the horizon, etc.: in a higher position: in a condition of elevation, advance, excitement, etc.: as far as: completely. from a lower to a higher place on or along. - Used substantively, as in the ups and downs of life.
• Toward a higher place or level.
• In or on a higher place.
• In or to an upright position; risen from bed.
• So as to be level ( to) or even ( with) in space, degree, etc.
• Aroused; astir.
• In or into promienence.
• At an end or close.
• Aloft; on high; out of bed; having risen from a seat; above the horizon; to a state of excitement; to a state of advance or proficiency; in a state of elevation, of climbing or ascending, of insurrection, of being increased, or of approach; in order; from younger years. Up and down, from one place to another; backwards and forwards. Up to, to an equal height with; to a degree or point adequate. Up with, raise; lift. Upside down, in complete disorder; with the lower part turned above the higher. Ups and downs, changes of fortune.
• Aloft; on high; in a state of advance; in a state of being raised or increased; in a state of climbing or ascending; in a state of insurrection; in a state of elevation; out of bed; into order, as he drew up his company; much used in modifying the action of a verb.
• getting higher or more vigorous; " its an up market"; " an improving economy"
• open; " the windows are up"
• being or moving higher in position or greater in some value; being above a former position or level; " the anchor is up"; " the sun is up"; " he lay face up"; " he is up by a pawn"; " the market is up"; " the corn is up"
• extending or moving toward a higher place; " the up staircase"; " a general upward movement of fish"
• ( usually followed by ` on' or ` for') in readiness; " he was up on his homework"; " had to be up for the game"
• used up; " time is up"
• ( used of computers) operating properly; " how soon will the computers be up?"
• In a higher place or position, literally or figuratively; in the state of having arisen; in an upright, or nearly upright, position; standing; mounted on a horse; in a condition of elevation, prominence, advance, proficiency, excitement, insurrection, or the like; -- used with verbs of rest, situation, condition, and the like; as, to be up on a hill; the lid of the box was up; prices are up.
• To or in a position of equal advance or equality; not short of, back of, less advanced than, away from, or the like; -- usually followed by to or with; as, to be up to the chin in water; to come up with one's companions; to come up with the enemy; to live up to engagements.
• Inclining up; tending or going up; upward; as, an up look; an up grade; the up train.
• Leading to a higher place; finished; as, the time is up.
• Aloft; on high; to a higher position; in a high or higher position; as far as; completely.
• From a lower to a higher place; on or along.
• Moving or sloping upward.

Usage examples for up

1. Not as yet;- they said he was there, but I had to come up and see her first, you know.  Ralph the Heir by Anthony Trollope

2. Some one was coming up.  The Crisis, Complete by Winston Churchill Last Updated: March 6, 2009

3. Now go up to her.  The Awkward Age by Henry James

4. I wanted to see what he was up to.  The White Desert by Courtney Ryley Cooper