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What is a single word to express about a solution or a particular thing which always works/gives fruitful results/solves the problem?

closed as off-topic by Hellion, Hank, oerkelens, sumelic, NVZ Jun 23 '17 at 20:49

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions on choosing an ideal word or phrase must include information on how it will be used in order to be answered. For help writing a good word or phrase request, see: About single word requests" – Hellion, Hank, oerkelens, sumelic, NVZ
If this question can be reworded to fit the rules in the help center, please edit the question.

  • 4
    One possibility is infallible. – Steve Lovell Jun 22 '17 at 17:33
  • 3
    Can you give us a context and an example sentence of how the potential word may be used? Also, what research have your done? fool-proof? dependable? reliable? – Hank Jun 22 '17 at 17:39
  • Reliable – MikeJRamsey56 Jun 22 '17 at 17:42
  • dependable – Jim Jun 22 '17 at 17:50
  • "does the trick" is used informally. – Tom22 Jun 22 '17 at 20:13
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Old faithful -- Collins

(noun) You can refer to something that has been used or has existed for a long time as an old faithful, especially when it is something you can rely on.
We tested a selection of vacuum cleaners, from old faithfuls to those with the latest features.

Tried and true -- AHD

Tested and proved to be worthy or reliable
Let me deal with it-my method is tried and true.

  • Just a heads-up, people have been hit with down votes before for having the temerity to answer requests for a single word with multiple-word expressions... – oerkelens Jun 22 '17 at 17:50
  • Old faithful is an Americanism, and may not make sense to English speakers outside the US. – Jim MacKenzie Jun 22 '17 at 18:14
  • @oerkelens True, that. Thanks for the heads-up. My reasoning is, single words would simply be synonyms of reliable. So, I provided something extra. – NVZ Jun 22 '17 at 19:39

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