otsust

In a sentence

• Ta tegi tähtsa otsuse.

  They made an important decision.

  Here, 'otsuse' is the direct object in singular in partitive case of the noun 'otsus', meaning 'decision'.

• Kas sa oled kindel oma otsuses?

  Are you sure about your decision?

  In this sentence, 'otsuses' is in the singular ininessive case, showing the location or state in relation to the decision.

• Selles kohas sünnivad parimad otsused.

  The best decisions are made in this place.

  Here, 'otsused' is plural in nominative case, used as the subject of the verb, indicating actions or ideas as decisions.