Intermediate (B1)
IPA: /ˌæsərˈteɪnəbl/
KK: /æˈsɜrˌteɪnəbl/
Definition
Able to be found out or determined with certainty.
Example
The results of the experiment were ascertainable after thorough analysis.
Conversation

I wonder if the results of the experiment are ascertainable now.

I think they might be, especially after the last update we got.

Yeah, it would be great to finally get some clarity on it.

For sure! I just hope the data is as clear and ascertainable as they say.
Synonyms & Antonyms
Synonyms
determinable
discoverable
verifiable
Antonyms
uncertain
ambiguous
indeterminate
Root Explanation
Ascertainable → It is formed from "ascertain" (from Old French *acertener*, meaning to make certain) and the suffix "-able" (meaning capable of). The word "ascertainable" means capable of being made certain or determined.
Memory Tip
Think of being able to 'make certain' about something — that's what 'ascertainable' means.
Visually Confused Words
unascertainable
nonascertainable
unascertainably
stainable
unascertainableness