1. upper respiratory tract

noun. The nose and throat and trachea.
Synonyms
olfactory organ voice box airway trachea windpipe larynx pharynx nasal cavity nose throat respiratory tract
Antonyms
rear back pull
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2. upper-level

adjective. At an elevated level in rank or importance.
Synonyms
superior high-ranking high-level
Antonyms
inferior worst subordinate low

3. upper

adjective. (ˈʌpɝ) Higher in place or position.
Synonyms
high
Antonyms
low black

4. tract

noun. (ˈtrækt) An extended area of land.
Synonyms
right field geographical region field of fire rightfield field geographic region battlefield subdivision lot field of honor minefield geographic area diamond playing area parcel of land mine field parade ground parkland common range playing field railyard land site center field industrial park left geographical area left field commons green plot of land patch right baseball diamond clearing grassland oasis glade battleground field of battle park mud flat fairground public square sector infield plot midway fairway plot of ground terrain piece of ground parcel piece of land center picnic area desert grounds breeding ground leftfield outfield picnic ground railway yard athletic field toll plaza short yard site centerfield square
Antonyms
infield outfield unusual separate individual
Etymology
tract (English)
tractus (Latin)

5. tract

noun. (ˈtrækt) A system of body parts that together serve some particular purpose.
Synonyms
airway system respiratory tract urinary tract
Antonyms
misfortune bad luck take unite trapezium
Etymology
tract (English)
tractus (Latin)

6. tract

noun. (ˈtrækt) A brief treatise on a subject of interest; published in the form of a booklet.
Synonyms
pamphlet treatise
Antonyms
uncommon extraordinary uncommonness
Etymology
tract (English)
tractus (Latin)

7. tract

noun. (ˈtrækt) A bundle of myelinated nerve fibers following a path through the brain.
Synonyms
white matter pathway radiatio optica cerebral peduncle commissure peduncle nerve tract substantia alba optic radiation nerve pathway
Antonyms
urban area rural area good luck good fortune success
Etymology
tract (English)
tractus (Latin)

8. upper

noun. (ˈʌpɝ) A central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression.
Synonyms
Dexedrine Methedrine amphetamine sulfate deoxyephedrine chalk stimulant ice street drug shabu pep pill amphetamine sulphate glass crank trash speed excitant methamphetamine chicken feed Benzedrine amphetamine drug of abuse stimulant drug bennie methamphetamine hydrochloride meth dextroamphetamine sulphate
Antonyms
heat uncover hard drug stay stay in place

9. upper

noun. (ˈʌpɝ) Piece of leather or synthetic material that forms the part of a shoe or boot above the sole that encases the foot.
Synonyms
shoe quarter vamp boot toe box piece of leather
Antonyms
unbend stable unfasten stop flatter

10. upper

adjective. (ˈʌpɝ) The topmost one of two.
Synonyms
top
Antonyms
bottom side
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