simultaneously
UK: ˌsɪməlˈteɪniəsli | US: ˌsaɪməlˈteɪniəsli
adv. at the same time; occurring or operating in unison
The word traces back to Latin simul (meaning "together") combined with taneus (a variant of tempus, meaning "time"). The suffix -ous forms an adjective, and -ly converts it into an adverb. The core idea is "occurring at the same time," reflecting its Latin roots in coordination and temporal alignment. Over time, it evolved into English with a focus on synchronicity.
The dancers moved simultaneously, creating a mesmerizing effect.
The two experiments were conducted simultaneously to save time.
The fireworks exploded simultaneously across the night sky.
She managed to answer emails and take notes simultaneously.
The satellites transmit data simultaneously to ensure accuracy.