Upper-Intermediate (B2)
IPA: /sɪŋˈkrəʊnəs/
KK: /sɪŋˈkrəʊnəs/
Definition
Existing or happening at the same time or rate.
Example
The two events were synchronous, starting and ending together.
Conversation

Did you notice how our presentations were synchronous today?

Yeah, it was cool to see everyone speaking at the same time.

I think it really helped with the flow of ideas.

Definitely! It made everything feel more connected.
Synonyms & Antonyms
Synonyms
simultaneous
concurrent
coincident
Antonyms
asynchronous
sequential
disparate
Root Explanation
Synchronous → It is formed from "syn-" (meaning together) and "chronos" (meaning time). The word describes events that occur at the same time or in harmony with each other.
Memory Tip
Think of events happening 'together' ('syn-') in 'time' ('chronos') — that's why synchronous means occurring at the same time.
Visually Confused Words
asynchronous
unsynchronous
nonsynchronous
synthronus
synthronos
isochronous
dyschronous
anachronous