Yes, ibex is a Scrabble word!
...and is worth 13 points in Scrabble, and 14 points in Words with Friends
ibex
Noun
1. Wild goat of mountain areas of Eurasia and northern Africa having large recurved horns
What Scrabble words can I make with the letters in ibex?
2 Letter Words
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Words that can be created with an extra letter added to ibex:
M:bemix