whenever

at any time when something happens or is true

cada vez que, siempre que

• whenever + clause

Collocations whenever necessary · whenever possible

• Whenever you need help, just call me.

  Cada vez que necesites ayuda, solo llámame.

used to introduce a condition or situation that is always true or possible

cualquier vez que, siempre que

• whenever + clause

Collocations whenever appropriate · whenever required

• Whenever there's a problem, we'll deal with it.

  Cualquier vez que haya un problema, lo resolveremos.