efficient

effizient

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

• This house is energy efficient.

  Dieses Haus ist energieeffizient.

  Tatoeba · Hybrid · CC BY 2.0 FR

• There must be a more efficient way to do this.

  Dafür muss es einen effizienteren Weg geben.

  Tatoeba · CK · CC BY 2.0 FR

effizient

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

effizient

effective, efficacious

effizient

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