understand

uskoa

kässätä, bonjata

ymmärtää

osata puhekieltä To be aware of the meaning of.

(ux)

I understand not what you mean by this.

In this sense, the word is usually used in the past participle:

(ux)

The most learned interpreters understood the words of sin, and not of Abel.

Thus, when he drew up instructions in lawyer language, he expressed the important words by an initial, a medial, or a final consonant, and made scratches for all the words between; his clerks, however, understood him very well.

(rfquotek)