词根词缀 
		AHD
Collins
Dictionary.com
Macquarie
NewOxfordEC
OED
Online Etymology Dictionary
SOED
WBD
Wiktionary
up- pref. (前缀)Up; upward: 朝上;向上: upheave. 撑起;使隆起 Upper: 高的: upland. 高地 语源 Middle English  中古英语  from Old English ūp-, upp-  * see  upo  源自 古英语 ūp-, upp-  *参见 upo  up-
prefix up, upper, or upwards ⇒  uproot 
⇒  upmost 
⇒  upthrust 
⇒  upgrade 
⇒  uplift 
Example Sentences When I don't show up- ``There's an answer to that one," interrupted Ziegler without humour.
 Jenkins, Geoffrey  A Daystar of Fear   up-
prefix with various senses, from Old English up, adv. , corresponding to similar prefixes in other Germanic languages.
up- /ʌp / prefix ORIGIN:  Repr. 
up  adverb 1 , adverb 2 , preposition 2 .Prefixed to nouns, adjectives, and verbs, in various relations and in various senses, esp. indicating (a) upland , uphearted , upside ;(b) upcurved , update , upheave , upswing . DERIVATIVE  up-anchor verb intrans.  Nautical L19 upbank adverb rare N. English M18 upˈbear verb trans.  arch. lit. fig. ME upˈbind verb trans.  arch. L16 upˈblown adjective arch. esp.  inflated, puffed up: L16 upˈboil verb intrans.  literary lit. fig. LME upbound adjective & adverb US L19 † upbounden adjective LME–L16 upbow noun Music L19 ˈupbreak noun obsolete Scot. (a) (b) M19 upˈbreak verb (a) † verb intrans. rare (b) verb trans. poet. (c) verb intrans. poet. ME upˈbreathe verb trans.  poet. E17 upˈbristled adjective rare E17 upˈbrushed adjective M19 upˈbubble verb intrans.  literary M19 upˈbuild verb trans.  lit. fig. E16 upˈbuilder noun M19 upˈbuoy verb trans.  literary M17 upburst noun M19 upˈburst verb (a) verb trans. rare (b) verb intrans. L16 up card noun US esp.  (in rummy) the top card of the waste heap: M20 upˈcatch verb trans.  poet. pass. M16 up-ˈchannel adverb & adjective L19 † upcheer verb trans.  rare only in L16  up-ˈchoked adjective Scot. L18 upchuck verb intrans. & trans.  N. Amer. slang M20 upˈclimb verb intrans. & trans.  arch. M16 upˈclose verb trans. & intrans.  arch. LME upcoast adjective & adverb L19 upˈcurl verb trans. & intrans.  E19 upcurrent noun E20 upcurved adjective L19 upcut noun Engineering M20 upˈdart verb intrans.  literary E18 up-dip adjective & adverb Geology E20 updo noun colloq. US M20 updoming noun Geology M20 updraught updraft noun (a) † rare indraught  2 (b) LME upˈdraw verb trans.  (a) rare (b) poet. ME upˈdry verb trans.  arch. pass. LME upˈfill verb trans.  rare LME upˈfilling noun rare E19 upflung adjective literary E19 upfold noun Geology E20 upˈfold verb trans.  arch. ME upfurled adjective literary E19 upful adjective W. Indian L20 upgang noun obsolete Scot. N. English (a) (b) OE upˈgather verb trans.  literary L16 upˈgaze verb intrans.  literary E19 upglide noun Phonetics M20 upˈgo verb intrans.  arch. Scot. ME upˈgrow verb intrans.  literary lit. fig. LME upgrowth noun spec.  a raised growth or process: M19 uphand adjective L17 upˈhang verb arch. (a) verb intrans. (b) verb trans. ME uphaul noun E20 upˈheap verb trans.  upheaped  ppl LME upˈhearted adjective rare M19 † uphoard verb trans.  L16–M17 uphoisted adjective M18 upˈhurl verb trans.  arch. L16 upˈknit verb trans.  rare L16 upˈlay verb trans.  arch. L16 upleap noun (a) (b) Mining L19 upˈleap verb intrans.  poet. ME upˈled adjective poet. rare M17 uplight noun uplighter L20 uplighter noun M20 uplink noun M20 upload verb trans.  Computing L20 † uplock verb trans.  L16–L17 uplong preposition, noun, & adjective (a) † preposition (b) noun (c) adjective arch. M18 uplying adjective L19 upˈmount verb intrans. & trans.  arch. M16 up-ˈpent adjective arch. E17 up-piled adjective poet. E17 up-pricked adjective rare L16 up-push noun rare E20 up-putting noun Scot. (a) † the action or an act of putting something up;(b) E16 upˈrend verb trans.  rare E20 uproused adjective poet. L16 upsell verb intrans.  L20 upˈsend verb trans.  M17 upshift noun & verb US (a) noun spec.  a change to a higher gear in a motor vehicle;(b) verb intrans.  M19 upsize verb trans. & intrans.  L20 upˈskill verb trans.  (a) (b) L20 upˈsoar verb intrans.  poet. L16 upˈspeak verb intrans.  poet. E19 upˈstartle verb trans.  poet. E19 upˈstay verb trans.  poet. fig. L16 upˈsteer verb trans.  dial. M16 upstir noun dial. M16 upstirring noun E17 upstirring adjective M18 up-street adverb colloq. dial. E19 upstretched adjective M16 upstroke noun (a) dial. (b) (c) Physiology E19 upˈswallow verb trans.  poet. L16 upˈswarm verb trans.  rare L16 upˈswell verb (a) verb intrans. (b) verb trans. LME upˈtear verb trans.  L16 upˈtie verb trans.  poet. LME uptilted adjective M19 uptime noun M20 upˈtorn adjective L16 upˈtoss verb trans.  E19 upˈtower verb intrans.  poet. M19 upˈtrained adjective poet. M16 uptrend noun US spec.  (Economics E20 upvaluation noun Economics M20 upvalue verb trans.  M20 upˈwaft verb trans.  poet. rare M18 upˈwake verb intrans. & trans.  rare ME upwarp noun Geology E20 upwarping noun Geology M20 upˈwash noun (a) rare (b) Aeronautics E20 upˈwell verb intrans.  spec.  of liquid, esp. seawater) surge upwards: L19 upwelling verbal spec.  the rising of cold water from the bottom of the sea, often bringing with it a renewed source of nutrients; the water that has risen in this way: M19 upˈwhirled adjective poet. M17 upˈwing verb intrans. & trans.  poet. rare L19 upˈwound adjective L16  ☞  up
up- Prefix   Used to indicate increase.   Over time the engine's power was uprated .   Used to indicate higher position or direction, literally or figuratively.   The uptake  of tickets increased dramatically after the favorable review.   Etymology From Middle English up- , from Old English ūp-  (“up- ”), from ūp  (“up, from above ”). Cognate with Dutch  op-  (“up- ”), German  auf-  (“up- ”). More at up .
Derived terms ► 
uprate upstart uptake