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functional

In a sentence
Po oprave je telefón opäť funkčný.
The phone is working again after the repair.
Po výmene dielu je zariadenie opäť funkčné.
After replacing the part, the device is functional again.
Hľadáme funkčné riešenie, nie len pekný návrh.
We are looking for a functional solution, not just a nice design.
Funkčný prototyp otestovali v teréne.
They tested the functional prototype in the field.
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Hand-reviewed example sentences.
Full attribution on References.