be unable to make heads nor tails (out) of (something)

To fail or be unable to understand, decipher, or make sense of something in the slightest. We tried identifying the hieroglyphs on the ancient tablet, but they were so archaic that we were unable to make heads nor tails of it. See if you can figure out what this contract is saying—I was unable to make heads nor tails out of all that legal mumbo jumbo. She was crying so hard that I was unable to make heads nor tails of what the actual problem was.

See also: head, make, nor, of, tail, to, unable

See also:

be unable to make head nor tail (out) of (something)
be unable to make head or tail (out) of (something)
be unable to make heads or tails (out) of (something)
make head or tail of something, to be unable to
not able to make head nor tail (out) of (something)
not able to make head or tail (out) of (something)
not able to make head or tail of
can't make heads nor tails of (someone or something)
not able to make heads nor tails (out) of (something)
not able to make heads or tails (out) of (something)

All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.