To give a verbal account of
To present a lifelike image of
I can't describe how helpless I felt.
I can't describe how strange this is, Father.
Because its meaning has to be imputed, we have tended to describe it in terms of prior technologies—which, in many cases, understates its potential by many orders of magnitude.
I can only describe the mood of our return trip as pensive.
She wanted to express her feelings for him, but mere words could not describe them.