There are 3 translations of aquel in English:

aquel1

(aquella)

adjetivo demonstrativo/demonstrative adjective (plural aquellos, aquellas)

There are 3 translations of aquel in English:

aquel2

(aquél, aquella, aquélla)

pronombre demonstrativo/demonstrative pronoun (plural aquellos, aquéllos, aquellas, aquéllas)

The Real Academia Española recommends the unaccented form in all cases
  • 1.1 (refiriéndose a una cosa) that one; (plural) those ese no, aquel not that one, the o/or that other one aquellos fueron momentos difíciles those were difficult times 1.2 (refiriéndose a una persona) Federico y Julián, y de los dos sería aquel quien lo lograría [literario/literary] Federico and Julián, and of the two it was the former who was to be successful todo aquel que desee obtener más información [formal] anyone o/or [formal] any person wishing to obtain further information es como el cuento de aquel que … it's like the story about the man who … cuando se entere aquel, te mata [familiar/colloquial] when you-know-who finds out, he'll kill you!