Vocab: tõsine - serious
serious; severe; a expression or demeanor that is focused, attentive, and not joking or smiling; very good or strong in one's field; severe, dangerous, or with serious consequences (regarding illness or injury)
Building blocks
tõsi- → “truth”
-ne → an adjective-forming ending
So, "tõsine" literally means "truthful", describing something that is genuine, weighty, or significant.
How to use it:
Here is how you use the word “tõsine” ⬇️
Examples
Auto mootoris on tõsine rike, mis vajab parandamist
Literally: “Car motor-in is serious malfunction which needs fixing”
Idiomatically: “There is a serious malfunction in the car's engine that needs repair”
Auto - Noun - Genitive Singular: "Car"
mootoris - Noun - Inessive Singular: "in motor"
on - Verb - 3rd Person Singular, Present Tense: "is"
tõsine - Adjective - Nominative Singular: "serious"
rike - Noun - Nominative Singular: "malfunction"
mis - Pronoun - Nominative Singular: "which"
vajab - Verb - 3rd Person Singular, Present Tense: "needs"
parandamist - Noun - Partitive Singular: "fixing"