sache

/saʃ/savoir
1.
verbSubjunctive3rdPresentSing1, 3

know

be aware of

Il faut que je sache la vérité.

I need to know the truth.

2.
verbImperative3rdPresentSing2

know

be advised

realize

Sache que je ne reviendrai pas.

Know that I will not come back.