Unyielded is valid Scrabble Word

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

Definitions for UNYIELDED in dictionary:

Similar words containing YIELD without suffix ed and without prefix un

yield9 yields10 yielded12 yielder11 outyield12 yielders12 yielding13 outyields13 yieldable15 yieldings14 outyielded15 unyielding15 yieldingly18 outyielding16 unyieldingly20 yieldingness17 yieldableness19 unyieldingness19 yieldingnesses19 yieldablenesses21
Find what other words can be done using letters: "unyielded"
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