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dissatisfied

In a sentence
Tom vyzerá stále nespokojný.
Tom always seems to be dissatisfied.
Zákazník bol nespokojný s oneskorenou dodávkou.
The customer was dissatisfied with the delayed delivery.
Nespokojní zamestnanci žiadali vyššie mzdy.
Dissatisfied employees demanded higher wages.
Nespokojný zákazník žiadal reklamáciu tovaru.
The dissatisfied customer requested a product return.
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.