Yes, query is in the scrabble dictionary

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Query Definition

noun

A doubt in the mind; a mental reservation.
from The American Heritage Dictionary of the English Language, 4th Edition
A notation, usually a question mark, calling attention to an item in order to question its validity or accuracy.
from The American Heritage Dictionary of the English Language, 4th Edition
A question; an inquiry.
from The American Heritage Dictionary of the English Language, 4th Edition
A question in the mind.
from Free Scrabble Dictionary
A question, especially one expressing doubt or requesting information:.
from Free Scrabble Dictionary

verb-transitive

To mark (an item) with a notation in order to question its validity or accuracy.
from The American Heritage Dictionary of the English Language, 4th Edition
To put a question to (a person). See Synonyms at ask.
from The American Heritage Dictionary of the English Language, 4th Edition

verb

To ask questions of especially with a desire for authoritative information.
from Free Scrabble Dictionary
To ask questions about especially in order to resolve a doubt.
from Free Scrabble Dictionary
To put as a question.
from Free Scrabble Dictionary
To mark with a query.
from Free Scrabble Dictionary

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Top Words by points

Points

query

17

2 letter words with QUERY

Points

er

2

re

2

ye

5

3 letter words with QUERY

Points

rue

3

rye

6

ryu

6

4 letter words with QUERY

Points

quey

16

5 letter words with QUERY

Points

query

17

Found 8 words in 0.13886 seconds