WordNet

establish as valid or genuine; "Can you back up your claims?" (同)back_up
strengthen by providing with a back or backing
a support that you can lean against while sitting; "the back of the dental chair was adjustable" (同)backrest
(American football) the position of a player on a football team who is stationed behind the line of scrimmage
the part of a garment that covers the back of your body; "they pinned a `kick me sign on his back"
travel backward; "back into the driveway"; "The car backed up and hit the tree"
the posterior part of a human (or animal) body from the neck to the end of the spine; "his back was nicely tanned" (同)dorsum
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" (同)rear
(football) a person who plays in the backfield
in or to or toward a past time; "set the clocks back an hour"; "never look back"; "lovers of the past looking fondly backward" (同)backward
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" (同)backward, backwards, rearward, rearwards
be behind; approve of; "He plumped for the Labor Party"; "I backed Kennedy in 1960" (同)endorse, indorse, plump for, plunk for, support
located at or near the back of an animal; "back (or hind) legs"; "the hinder part of a carcass" (同)hind, hinder
be in back of; "My garage backs their yard"
cause to travel backward; "back the car into the parking spot"
in or to or toward a former location; "she went back to her parents house"
in or to or toward an original condition; "he went back to sleep"
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"
in reply; "he wrote back three days later"
of an earlier date; "back issues of the magazine"
related to or located at the back; "the back yard"; "the back entrance"
shift to a counterclockwise direction; "the wind backed"
support financial backing for; "back this enterprise"
not homosexual
a poker hand with 5 consecutive cards (regardless of suit)
successive (without a break); "sick for five straight days" (同)consecutive
characterized by honesty and fairness; "straight dealing"; "a square deal" (同)square
erect in posture; "sit straight"; "stood defiantly with unbowed back" (同)unbent, unbowed
(of hair) having no waves or curls; "her naturally straight hair hung long and silky"
following a correct or logical method; "straight reasoning"
free from curves or angles; "a straight line"
having no deviations; "straight lines"; "straight roads across the desert"; "straight teeth"; "straight shoulders"
in a straight line; in a direct course; "the road runs straight"
in keeping with the facts; "set the record straight"; "made sure the facts were straight in the report"
neatly arranged; not disorderly; "the room is straight now"
the act of providing approval and support; "his vigorous backing of the conservatives got him in trouble with progressives" (同)backup, championship, patronage
something forming a back that is added for strengthening (同)mount
used of film that is coated on the side opposite the emulsion with a substance to absorb light
having a back or backing, usually of a specified type

PrepTutorEJDIC

〈C〉(人・動物の)『背』,『背中』,背部 / 《通例the~》(正面に対して)(…の)『後ろ』,『裏』,奥,後部《+『of』+『名』》 / 《通例the back》背に似たもの;(手足の)甲;(刀の)みね;(いす・本の)背 / 〈C〉〈U〉(フットボール・ホッケーなどの)後衛 / 《名詞の前にのみ用にて》『後ろの』,後部にある,裏の / 後もどりする,逆の / 遅れている,未払いの / (中心から)遠い,へんぴな,奥地の / (音声が)後舌音の / 『後方へ』,『後ろに』(backward) / (場所・状態が)『もとへ』,帰って,返して / (時間的に)『さかのぼって』,今から…前に(ago) / 〈車など〉'を'『後退させる』 / (…で)〈人・計画など〉'を'『後援する』,支持する(support)《+『名』+『in』+『名』》 / (競馬で)…に賭ける / (…で)…‘の'伴奏をする《+『名』+『by』+『名』》 / …‘の'裏手にある,背景をなす / 〈手形など〉‘に'裏書きする(endorse) / 《しばしば受動態で》〈本〉‘に'背をつける,(…で)…'を'裏打ちする《+『名』+『with』+『名』》 / 後ずさりする,後退する(move backward)
『まっすぐな』,一直線の / (毛髪などが)まっすぐな / (背などが,曲らずに)『直立した』,まっすぐな / 《補語にのみ用いて》『整理した』,きちんとした / 真実を言う,率直な,正直な / 連続した / 《米》(ある政党に)徹底した,ベッタリの,きっすいの / (比較変化なし)『まっすぐに』,一直線に;『直立して』,垂直に / 『直ちに』,回り道をしないで / 率直に,端的に / 《the~》まっすぐ,一直線;直線コース / (カードゲームで)ポーカーの5枚続き,ストレート
〈U〉(本などの)裏打ち,背付け / 〈U〉後援,支持;《集合的に》後援者たち / 〈C〉(ポピュラー音楽で)伴奏