Rechallenging is valid Scrabble Word

Is rechallenging a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is rechallenging valid Words with Friends?
Words with Friends YES

13 letters word
20 points in Scrabble
26 points in WWF

Definitions for RECHALLENGING in dictionary:

VERB:

RECHALLENGE, to challenge again

NOUN:

A challenge made in return; a second or repeated challenge.
Immunology and Medicine. The action of rechallenge; an instance of this.
To challenge again.
Immunology and Medicine. To treat (a patient or animal) again with a particular infectious agent, antigen, or drug, in order to test for immunity, hypersensitivity, or other type of (often adverse) reaction.

Words related to RECHALLENGING

rechallenge17

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