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たりとも
taritomo
JLPT N1
Edit  blabby
Meaning
Even only / Even merely / Even just
Don't waste even just one cent!
Edit  blabby
Formation
Phrases
ごはんのいちつぶたりともむだにするな!
Don't you dare waste even one grain of rice!
Edit  #5442 blabby
こんなテレビゲームをやるとき、いっしゅんたりともきをぬくことができない。
With this type of video game, you can't afford to lose your concentration for even just a second.
Edit  #5443 blabby
1センチたりともすすまない。
Not progress even a centimeter.
Edit  #5444 blabby
いちふんたりともむだにできないぞ。
(We) don't have a minute to waste!
Edit  #7062 Lorenz
しあいのさいちゅうは、いっしゅんたりともゆだんはできない。
We can't afford even a moment of carelessness during the game.
Edit  #7798 inakaluke
なんにんたりともここにはいることはゆるされない。
Not one person can be allowed to enter.
Edit  #7799 inakaluke
Discussion and comments
Small amount + たりとも。
Often the small amount starts with a 1. 1円, 1分, 1セント, etc.
blabby
〜たりとも...ない  : (1円/一日/...)
              であっても〜ない

often with negative potential form, できない、許されない
#5444 is awkward. You just use も in that case and say:

1センチも進まない or 1センチも進むことができない.
たりとも in such cases is used to prevent or deter the progress. E.g., 1センチたりとも進ませない.
bamboo4
agree with bamboo on #5444
Besides which "Not progress" is bad English.
Paul
Agree with bamboo
サリル