efficient

1. Making good, thorough, or careful use of resources; not consuming extra. Especially, making good use of time or energy.

   An efficient process would automate all the routine work.

   Our cleaners are almost too efficient: they throw away anything left out on a desk.

   effizient

   эффекти́вныйeffektívnyj

   ефекти́внийefektývnyj

2. Expressing the proportion of consumed energy that was successfully used in a process; the ratio of useful output to total input.

   The motor is only 20% efficient at that temperature.

3. Causing effects, producing results; bringing into being; initiating change (rare except in philosophical and legal expression efficient cause = causative factor or agent).

   Ownership, maintenance, or use of the automobile need not be the direct and efficient cause of the injury sustained

4. (proscribed)Effective, efficacious

1. Tom is quite efficient.

   Том доволі ефективний.

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2. You're very efficient.

   Ти дуже здібний.

   ruТы очень эффективен.

   deDu bist sehr tüchtig.

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3. Tom seems efficient.

   Том, здається, ефективний.

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4. Tom is very efficient, isn't he?

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5. Tom isn't very efficient, is he?

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