back - definition, thesaurus and related words from WordNet-Online

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Adjective back has 3 senses

back - related to or located at the back; "the back yard"; "the back entrance"
Antonyms: front, advance, advanced, in advance, foremost, frontmost, forward, frontal, head-on
back, hind, hinder - located at or near the back of an animal; "back (or hind) legs"; "the hinder part of a carcass"
Antonym: anterior (indirect, via posterior)
back - of an earlier date; "back issues of the magazine"
Antonym: current (indirect, via noncurrent)

Adverbial back has 6 senses

back - in or to or toward a former location; "she went back to her parents' house"
back, backward, backwards, rearward, rearwards - at or to or toward the back or rear; "he moved back"; "tripped when he stepped backward"; "she looked rearward out the window of the car"
back - in or to or toward an original condition; "he went back to sleep"
back, backward - in or to or toward a past time; "set the clocks back an hour"; "never look back"; "lovers of the past looking fondly backward"
Antonyms: ahead, forward
back, in reply - in answer; "he wrote back three days later"; "had little to say in reply to the questions"
back - in repayment or retaliation; "we paid back everything we had borrowed"; "he hit me and I hit him back"; "I was kept in after school for talking back to the teacher"

Noun back has 9 senses

back, dorsum - the posterior part of a human (or animal) body from the neck to the end of the spine; "his back was nicely tanned"
--₁ is a kind of body part
--₁ is a part of torso, trunk, body
--₁ has parts:
saddle; small; latisimus dorsi, lat; thoracic vertebra, dorsal vertebra; lumbar vertebra
rear, back - the side that goes last or is not normally seen; "he wrote the date on the back of the photograph"
--₂ is a kind of side
--₂ has particulars:
stern, after part, quarter, poop, tail; tail, tail assembly, empennage

Derived form: verb back₆
back, rear - the part of something that is furthest from the normal viewer; "he stood at the back of the stage"; "it was hidden in the rear of the store"
--₃ is a kind of position, place
Antonyms: front
back - (football) a person who plays in the backfield
--₄ is a kind of football player, footballer
--₄ has particulars:
flanker back, flanker; quarterback, signal caller, field general; running back; tailback; wingback
spinal column, vertebral column, spine, backbone, back, rachis - the series of vertebrae forming the axis of the skeleton and protecting the spinal cord; "the fall broke his back"
--₅ is a kind of skeletal structure
--₅ is a part of axial skeleton
--₅ has parts:
spinal canal, vertebral canal, canalis vertebralis; coccyx, tail bone; vertebra; intervertebral disc, intervertebral disk
--₅ has particulars: notochord; chine
binding, book binding, cover, back - the front and back covering of a book; "the book had a leather binding"
--₆ is a kind of protective covering, protective cover, protection
--₆ is a part of book, volume
--₆ has particulars: half binding; three-quarter binding
Derived form: verb back₁₀
back - the part of a garment that covers your back; "they pinned a `kick me' sign on his back"
--₇ is a kind of cloth covering
back, backrest - a support that you can lean against while sitting; "the back of the dental chair was adjustable"
--₈ is a kind of support
--₈ is a part of chair; car seat
--₈ has particulars: cantle; ladder-back
back - the position of a player on a football team who is stationed behind the line of scrimmage
--₉ is a kind of position
--₉ is a member of backfield; secondary
--₉ has particulars:
linebacker, line backer; quarterback, signal caller, field general; fullback; halfback; tailback; wingback

Verb back has 10 senses

back, endorse, indorse, plump for, plunk for, support - be behind; approve of; "He plumped for the Labor Party"; "I backed Kennedy in 1960"
--₁ is one way to approve, O.K., okay, sanction

Derived form: noun backing₁
Sample sentences:
Somebody ----s something
Somebody ----s somebody
back - travel backward; "back into the driveway"; "The car backed up and hit the tree"
--₂ is one way to travel, go, move, locomote
Sample sentences:
Something is ----ing PP
Somebody ----s PP
second, back, endorse, indorse - give support or one's approval to; "I'll second that motion"; "I can't back this plan"; "endorse a new project"
--₃ is one way to support, back up

Derived form: noun backing₁
Sample sentence:
Somebody ----s something
back - cause to travel backward; "back the car into the parking spot"
Antonyms: advance, bring forward
Sample sentences:
Somebody ----s somebody PP
Somebody ----s something PP
back - support financial backing for; "back this enterprise"
--₅ is one way to finance

Derived forms: noun backer₁, noun backing₃, noun backing₁
Sample sentence:
Sam and Sue back the movie
back - be in back of; "My garage backs their yard"
--₆ is one way to lie
Antonyms: front, look, face

Derived form: noun back₂
Sample sentence:
Something ----s something
bet on, back, gage, stake, game, punt - place a bet on; "Which horse are you backing?"; "I'm betting on the new horse"
--₇ is one way to bet, wager, play
Sample sentences:
Somebody ----s something
Somebody ----s on something
back - shift to a counterclockwise direction; "the wind backed"
--₈ is one way to switch, change over, shift
Antonyms: veer
Sample sentence:
Something ----s
back, back up - establish as valid or genuine; "Can you back up your claims?"
--₉ is one way to confirm, corroborate, sustain, substantiate, support, affirm
Sample sentences:
Somebody ----s something
Something ----s something
back - strengthen by providing with a back or backing
--₁₀ is one way to strengthen

Derived forms: noun back₆, noun backing₂
Sample sentence:
Somebody ----s something