challenges

/CH AE1 L AH0 N JH IH0 Z/
noun
  1. 1

    A confrontation; a dare.

  2. 2

    A difficult task, especially one that the person making the attempt finds more enjoyable because of that difficulty.

  3. 3

    A procedure or action.

  4. 4

    The opening and crying of hounds at first finding the scent of their game.

verb
  1. 1

    To invite (someone) to take part in a competition.

    โ€œWe challenged the boys next door to a game of football.โ€

  2. 2

    To dare (someone).

  3. 3

    To dispute (something).

    โ€œto challenge the accuracy of a statement or of a quotationโ€

  4. 4

    To make a formal objection to a juror.

  5. 5

    To claim as due; to demand as a right.

  6. 6

    To censure; to blame.

  7. 7

    To question or demand the countersign from (one who attempts to pass the lines).

    โ€œThe sentinel challenged us with "Who goes there?"โ€

  8. 8

    To object to the reception of the vote of, e.g. on the ground that the person is not qualified as a voter.

  9. 9

    To take (a final exam) in order to get credit for a course without taking it.

Source: https://en.wiktionary.org/wiki/challenge, https://en.wiktionary.org/wiki/challenges