Learn English – not living up to expectations

word-choice

I am looking for a single, or multiple term(s) conveying something not living up to expectations.

Like in the sense of a new system is advertised as doing everything you need for a process at work; but, once you start using it, you discover it doesn't do exactly as promised. So, you have to create work-a-rounds.

Best Answer

I'd use "let down".

Per MacMillan Dictionary:

to make someone disappointed by not doing something that they are expecting you to do

  • The kids will be let down when they hear you can't come after all.
  • The families of the victims feel that the justice system has let them down.

You can also use it for things, or for a new system as you describe, for instance:

The Apple event was a huge let down.

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