Unascertained is valid Scrabble Word

Is unascertained a scrabble word?
Official Scrabble Players Dictionary NO
Official Tournament and Club Word List NO
Collins Scrabble Words YES
Is unascertained valid Words with Friends?
Words with Friends YES

13 letters word
16 points in Scrabble
20 points in WWF

Definitions for UNASCERTAINED in dictionary:

ADJECTIVE:

not ascertained
not confirmed or ascertained; unknown.

How to use UNASCERTAINED in a sentence

Croix to the most northwesternmost point of the Lake of the Woods still remained unascertained, and it was therefore agreed to provide for a final adjustment thereof.
Some of the unascertained words probably also belong to that language.
Perhaps, as poppa suggested, business had moved away from the hills and we should find them in the suburbs, but this we were obliged to leave unascertained.

Similar words containing ASCERTAIN without suffix ed and without prefix un

ascertain11 ascertains12 ascertained14 ascertaining15 ascertainable17 ascertainably20 ascertainment17 ascertainments18 unascertainable19

Find what other words can be done using letters: "unascertained"
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