doplněk znamená v angličtina

accessory [accessories]▼(clothing accessory)
noun
[UK: ək.ˈse.sə.ri] [US: æk.ˈse.sə.ri]

add-on [add-ons]▼(software: extension of core application)
noun

complement [complements]▼(set theory: relative complement)
noun
[UK: ˈkɒm.plɪ.mənt] [US: ˈkɑːm.plə.mənt]

complement [complements]▼(word or group of words completing the predicate, identified with the subject or object)
noun
[UK: ˈkɒm.plɪ.mənt] [US: ˈkɑːm.plə.mənt]

supplement [supplements]▼(supplementary angle in geometry)
noun
[UK: ˈsʌ.plɪ.ment] [US: ˈsʌ.plə.mənt]

supplement [supplements]▼(vitamin, herbal extract, or chemical compound)
noun
[UK: ˈsʌ.plɪ.ment] [US: ˈsʌ.plə.mənt]