tõsidus
Tõsidus is an Estonian abstract noun that denotes the quality of being true, genuine, or serious. It is commonly understood as veracity or seriousness, depending on the context, and is formed from the root tõsi (truth) with the noun-forming suffix -dus. In practice, the term can describe the factual reliability of statements or documents, the authenticity of objects, or the gravity and sincerity of a person or situation.
In linguistic and cultural use, tõsidus often appears in formal, literary, or philosophical discussions. It can
Synonyms and nuance include ausus (honesty), tõde (truth), and usaldus (trust), though tõsidus emphasizes authenticity, seriousness,