Questions & Answers about Jedino ona zna cijelu istinu.
I usually use samo for only. Can I use it here instead of jedino?
Yes, you can say Samo ona zna cijelu istinu. Both words mean only, but jedino gives a slightly stronger emphasis on exclusivity, meaning she is the absolute only person who knows.
Why do the words cijela and istina end in -u here?
They are the direct object of the verb zna (knows), which means they must be in the accusative case. For feminine singular words, the nominative -a ending changes to -u, making it cijelu istinu.
Would the meaning change if I moved the first word and said Ona jedino zna cijelu istinu?
Yes, word order changes the emphasis. Placing jedino right before ona means only she knows it and nobody else does. If you put jedino after ona, it sounds like knowing the truth is the only action she takes.
Does jedino end in -o here because it is a neuter adjective?
No, in this sentence jedino is acting as a fixed adverb meaning solely or only, so it does not change its ending to match the feminine pronoun ona. If you wanted to use it as an adjective to say she is the only one, you would say Ona je jedina koja zna cijelu istinu.