Functional
Functional adjective - Being in effective operation.
Sound and functional are semantically related. In some cases you can use "Sound" instead an adjective "Functional".
Sound
Sound adjective - According to the rules of logic.
Functional and sound are semantically related. Sometimes you can use "Functional" instead an adjective "Sound".
Both words in one sentence
- Vaults scattered around the island are fitted with sensitive microphones which pick up the sound from the island's massive, fully functional electric guitar.
Source: Songs in the Key of Lock - Weapon, however, will be fully functional until the end, when it (according to the following sound) is pulverized.
Source: Breakable Weapons - He doesnt just sound bored, hes practically comatose and doesnt bother to inject any emotion into his (admittedly functional) dialogue.
Cite this Source
Sound and Functional. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/functional/sound
Functional & Sound. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/functional/sound>.
Sound or Functional. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/functional/sound.
Google Ngram Viewer shows how "functional" and "sound" have occurred on timeline