up and on; upward so as to get or be on: He climbed upon his horse and rode off.
2.
in an elevated position on: There is a television antenna upon every house in the neighborhood.
3.
in or into complete or approximate contact with, as an attacker or an important or pressing occasion: The enemy was upon us and our soldiers had little time to escape. The Christmas holiday will soon be upon us and we have hardly begun to buy gifts. The time to take action is upon us.
4.
immediately or very soon after: She went into mourning upon her husband's death.
5.
on the occasion of: She was joyful upon seeing her child take his first steps.
6.
on (in any of various senses, used as an equivalent of on with no added idea of ascent or elevation, and preferred in certain cases only for euphonic or metrical reasons): He swore upon his honor as a gentleman.
to, toward, or in a more elevated position: to climb up to the top of a ladder.
2.
to or in an erect position: to stand up.
3.
out of bed: to get up.
4.
above the horizon: The moon came up.
5.
to or at any point that is considered higher.
6.
to or at a source, origin, center, or the like: to follow a stream up to its source.
7.
to or at a higher point or degree, as of rank, size, value, pitch, loudness, brightness, maturity, or speed: to move up in a firm; to pump up a tire; to turn a lantern up; Prices are going up. Speak up! Hurry up!
8.
ahead; in a leading position in a competition: He managed to get up on his opponent by three points.
9.
in continuing contact, esp. as reflecting continuing awareness, knowledge, etc.: to keep up with the latest developments in mathematics.
10.
into or in activity, operation, etc.: to set up vibrations.
11.
into a state of emotional agitation or distress: His insults left her all roiled up.
12.
into existence, visible form, etc.: His sample was worked up in the studio.
13.
into view, prominence, or consideration: The lost papers have turned up.
14.
into or in a place of safekeeping, storage, retirement, etc.: to lay up riches; to put up preserves.
15.
into or in a state of union, contraction, etc.: to add up a column of figures; to fold up.
16.
to the required or final point: to pay up one's debts; burned up.
17.
to a state of completion; to an end: She finished it all up.
18.
to a halt: The riders reined up and dismounted.
19.
Baseball. being the player or team batting; at bat.
20.
(used as a function word for additional emphasis, sometimes prec. by it): Go wake your father up. What plugged it up? We laughed it up.
21.
ahead of an opponent or opponents in points, games, etc.: The golfer was two strokes up on his nearest competitor.
22.
each; apiece: The score was seven up in the final quarter.
23.
(of machines or equipment, as computers) working; in working order or in operation.
24.
Informal. without the addition of ice; straight up: Bring me a martini, up.
25.
Nautical. toward the wind: Put the helm up.
–preposition
26.
to, toward, or at an elevated place on or in: They went up the stairs. The cat is up the tree.
27.
to, toward, or at a high or higher station, condition, or rank on or in: He is well up the social ladder.
28.
at or to a farther point or higher place on or in: She is up the street. I'm going up the street.
29.
toward the source, origin, etc., of: up the stream.
30.
toward a particular direction or in the interior of, as a region or territory: The explorers were up north.
31.
in a course or direction that is contrary to that of: to row up the current.
–adjective
32.
moving in or related to a direction that is up or is regarded as up: the up elevator; the up train traveling north; the up platform of a railroad station.
33.
informed; familiar; aware (usually fol. by on or in): She is always up on current events.
34.
concluded; ended; finished; terminated: The game is up. Your hour is up.
35.
going on or happening; taking place; occurring: What's up over there?
36.
having a high position or station: He is up in society.
37.
in an erect, vertical, or raised position: The gate at the railroad crossing is up. The tent is up.
38.
above the earth or ground: The corn is up and ready to be harvested.
39.
in the air; aloft: The meteorological balloons are up. The airplanes are up for their reconnaissance flights.
40.
(of heavenly bodies) risen above the horizon: The sun is up.
41.
awake or out of bed: to be up with insomnia.
42.
mounted on horseback: He knows which jockeys are up in every race.
43.
(of water in natural bodies) high with relation to the banks or shore: The tide is up.
44.
built; constructed: The new museum is up and open to the public.
a person or thing that is in a favorable position of wealth, fortune, etc.: People who were ups in the business world suffered losses in the economic depression.
74.
an upward slope; elevation.
75.
an upward course or rise, as in price or value: The landlord promised his tenants there would be no further ups in the rent this year.
to raise; go better than (a preceding wager): to up the ante.
–verb (used without object)
80.
Informal. to start up; begin something abruptly (usually fol. by and and another verb): Then he upped and ran away from home.
81.
(often used imperatively or hortatively) to rise up: Up, men, and fight until all the enemy are defeated!
—Idioms
82.
all up with, at or approaching the end of; with defeat or ruin imminent for: He realized it was all up with him when the search party began to close in.
up against, faced or confronted with: They were up against formidable obstacles.
87.
up against it, in a difficult situation, esp. in financial straits: There was no one to help him when he was up against it.
88.
up and around, recovered from an illness; able to leave one's bed. Also, up and about.
89.
up and doing, Informal. actively engaged; alert; busy: During her convalescence she longed to be up and doing.
90.
up and down,
a.
back and forth; backward and forward: He paced up and down.
b.
from top to bottom or head to toe: She looked me up and down before replying.
91.
up for, considered as eligible or as a possibility for (something): The child is up for adoption. Three actresses are up for the role.
92.
up to,
a.
as far as or approaching (a certain part, degree, point, etc.): She went wading up to her knees. I am up to the eighth lesson.
b.
in full realization or attainment of: He worked up to president of the company.
c.
as many as; to the limit of: The car will seat up to five persons.
d.
having adequate powers or ability for; capable of; equal to: He didn't think I was up to the job.
e.
the duty or responsibility of; incumbent upon: It's up to you to break the news to him.
f.
engaged in; contriving; doing: What have you been up to lately?
93.
up your ass, Slang:Vulgar. shove(def. 6). Also, up yours.
Origin: bef. 900; ME up(pe) (adv.), OE up(p) to a higher position, uppe in a higher position; c. OFris up, OS up, MD up, op, ON upp; akin to OHG ūf (> G auf), Goth iup
[uh-pon, uh-pawn] 
