rechallenge is a valid English word

Scrabble validity: valid ( international - Sowpods, US - Twl06 )
iScramble validity: invalid
QuickWords validity: invalid

Meanings

Verb

To challenge again.
To challenge in return.
(medicine pharmacology) To try a therapeutic pharmaceutical drug, suspected allergen, or medical treatment on a patient a second or subsequent time, to see if the suspected effects of the treatment occur again. This is typically performed to confirm allergic or adverse reactions to allergens or medications, but may also be used to confirm beneficial treatments or to retry a probable beneficial treatment which did not appear to be effective previously.

Noun (COUNTABLE)

A challenge made in return.
(medicine pharmacology) The event of rechallenging as above.

rechallenge is a Scrabble valid word

r1e1c3h4a1l1l1e1n1g2e1

• International English (Sowpods) - The word is valid in Scrabble ✔
• US English (TWL06) - The word is valid in Scrabble ✔
• 17 points

rechallenge is not an iScramble, QuickWords valid word

r1e2c3h4a5l6l7e8n9g10e11

• The word is not valid in iScramble ✘
• The word is not valid in QuickWords ✘
• 66 points

Same letters words (Anagrams)

• none

Same letters plus one

• PRECHALLENGE
• RECHALLENGED
• RECHALLENGES

Same letters minus one

• CHALLENGEE
• CHALLENGER