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immediate

In a sentence
Liek má okamžitý účinok.
The medicine had an immediate effect.
Okamžite mu vráť tie peniaze!
Return the money to him at once.
Lekár prišiel okamžite.
The doctor came immediately.
Okamžite ju treba odviezť do nemocnice.
She needs to be driven to the hospital immediately.
Examples from Tatoeba (CC BY 2.0 FR).
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Includes Tatoeba example sentences when present.
Full attribution on References.