entry
simultaneously
/ˌsɪməlˈteɪnɪəsli/; /ˌsaɪməlˈteɪnɪəsli/At the same time or on the same occasion
From Medieval Latin, from Latin simultaneous (Together or at the same time).
Word Ancestry
Picture two events unfolding side by side: that is the central image behind Latin simul, meaning “together” or “at the same time.” Medieval Latin turned it into simultaneus, and English adopted simultaneous in the 1650s for things happening in parallel. The same Latin family is connected with similis, “like” or “resembling,” which also gave English similar and similitude—so “at the same time” and “alike” are distant linguistic cousins. Mark Twain later played with the adjective and back-formed the verb simultane, meaning to do one thing at the same time as another. Add the ordinary English adverbial ending -ly, and simultaneously becomes a grammatical multitasker: one word carrying two actions in step.
The Story
Picture two events unfolding side by side: that is the central image behind Latin simul, meaning “together” or “at the same time.” Medieval Latin turned it into simultaneus, and English adopted simultaneous in the 1650s for things happening in parallel. The same Latin family is connected with similis, “like” or “resembling,” which also gave English similar and similitude—so “at the same time” and “alike” are distant linguistic cousins. Mark Twain later played with the adjective and back-formed the verb simultane, meaning to do one thing at the same time as another. Add the ordinary English adverbial ending -ly, and simultaneously becomes a grammatical multitasker: one word carrying two actions in step.
Kin & Kindred
From 'simultaneous'·Together or at the same time
Derived Terms
English words from this root
Sources
Etymonline
Free Dictionary
Urban Dictionary