(comparative more unascertainable, superlative most unascertainable)
From un- + ascertainable.
"unascertainable." YourDictionary, n.d. Web. 07 June 2019. <https://www.yourdictionary.com/unascertainable>.
unascertainable. (n.d.). Retrieved June 07th, 2019, from https://www.yourdictionary.com/unascertainable
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