Sinkiest is valid Scrabble Word

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

8 letters word
12 points in Scrabble
13 points in WWF

Definitions for SINKIEST in dictionary:

ADJECTIVE:

SINKY, yielding underfoot

Words related to SINKIEST

sinky12

Similar words containing SINK without suffix iest

sink8 sinks9 sinky12 sinker10 sinkage12 sinkers11 sinkful14 sinkier11 sinking12 sinkable14 sinkages13 sinkfuls15 sinkhole15 sinkings13 diesinker14 heartsink16 sinkholes16 diesinkers15 heartsinks17 unsinkable16 sinkerball16 countersink17 nonsinkable17 sinkerballs17 countersinks18 countersinking21

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