simultaneousness C2+ Topic:Time US /ˌsaɪməlˈteɪniəsnəs/ UK /ˌsɪməlˈteɪniəsnəs/ See IPA manual Meanings 1 noun the state of happening or existing at the same time The simultaneousness of the two explosions baffled investigators. Thesaurus Synonyms 1 noun · the state of happening or... simultaneityconcurrencecoincidencesynchronismconcurrency ↔ Opposites successionsequence Word family Related forms simultaneoussimultaneitysimultaneously Etymology AI details From simultaneous (from Medieval Latin simultaneus, influenced by Latin simul 'at the same time') plus the suffix -ness. simul Latin View etymology graph -> Topics Time Word Formation & Derivatives External links Cambridge Dictionary Wiktionary Google Images # simultaneousness **Type:** Word **Level:** C2+ **Part of speech:** noun **IPA (US):** /ˌsaɪməlˈteɪniəsnəs/ **IPA (UK):** /ˌsɪməlˈteɪniəsnəs/ ## Meanings 1. the state of happening or existing at the same time ## Examples - The simultaneousness of the two explosions baffled investigators. ## Synonyms - simultaneity - concurrence - coincidence - synchronism - concurrency ## Antonyms - succession - sequence ## Related Forms - simultaneous - simultaneity - simultaneously ## Roots and Affixes - Root: simul ## Etymology From simultaneous (from Medieval Latin simultaneus, influenced by Latin simul 'at the same time') plus the suffix -ness. ## AI Etymology Simultaneousness comes from simultaneous (from Medieval Latin simultaneus, influenced by Latin simul 'at the same time') plus the suffix -ness. The historical chain includes Latin simul. The quoted older sense, "at the same time," supplies the immediate semantic anchor for simultaneousness. The formation is best read as suffixal and borrowed: the word simultaneousness carries its older form-history into a compact English lexical shape. In present English it is used as a noun, "the state of happening or existing at the same time". Related English forms include simultaneous, simultaneity, and simultaneously. The result is a noun whose etymology preserves both the older form and the later English specialization. ## Topics - Time - Word Formation & Derivatives markdown