| antonym | eng: dysfunctional |
| antonym | eng: nonfunctional |
| antonym | eng: organic |
| etymological origin of | eng: difunctional |
| etymological origin of | eng: dysfunctional |
| etymological origin of | eng: nonfunctional |
| etymological origin of | eng: unfunctional |
| etymologically related | eng: function |
| etymologically related | eng: functionality |
| etymologically related | eng: functionary |
| etymology | eng: -al |
| etymology | eng: function |
| has derived form | eng: function |
| has derived form | eng: functional analysis diagram |
| has derived form | eng: functional analysis |
| has derived form | eng: functional anatomy |
| has derived form | eng: functional application |
| has derived form | eng: functional bombing |
| has derived form | eng: functional constraint |
| has derived form | eng: functional decomposition |
| has derived form | eng: functional design |
| has derived form | eng: functional diagram |
| has derived form | eng: functional disorder |
| has derived form | eng: functional electrical stimulation |
| has derived form | eng: functional error recovery |
| has derived form | eng: functional failure |
| has derived form | eng: functional group |
| has derived form | eng: functional interleaving |
| has derived form | eng: functional programming |
| has derived form | eng: functional requirement |
| has derived form | eng: functional residual capacity |
| has derived form | eng: functional specifications |
| has derived form | eng: functional switching circuit |
| has derived form | eng: functional unit |
| has derived form | eng: functionality |
| has derived form | eng: functionally |
| has derived form | eng: functionals |
| is derived from | eng: function |
| lexical category | adjective |
| lexical category | noun |
| semantically related | eng: applicatory |
| semantically related | eng: effective |
| semantically related | eng: pragmatic |
| semantically related | eng: secret agent |
| semantically related | eng: thorough |
| synonym | eng: functioning |
| synonym | eng: pragmatic |
| synonym | eng: utilitarian |
| synonym | eng: working |
| translation | ces: funkční |
| translation | ces: funkcionální |
| translation | deu: Funktions |
| translation | deu: Gebrauchs |
| translation | deu: funktional |
| translation | deu: funktionell |
| translation | deu: funktions |
| translation | deu: operativ |
| translation | deu: zweckmäßig |
| translation | eng: useful |
| translation | fin: käytännöllinen |
| translation | fin: toimiva |
| translation | fra: fonctionnel |
| translation | ita: funzionale |
| translation | ita: funzionante |
| translation | nld: doelmatig |
| translation | nld: functioneel |
| translation | nld: functionerend |
| translation | nld: operationeel |
| translation | nld: werkend |
| translation | por: funcional |
| translation | rus: действующий |
| translation | rus: рабочий |
| translation | rus: функционал |
| translation | rus: функциональный |
| translation | rus: функционирующий |
| translation | spa: funcional |
| translation | swe: fungerande |
| translation | swe: funktional |
| translation | swe: funktionell |
| translation | zho: 功能 |