Simultaneously - at the same time
If things happen simultaneously, they happen at the same
time. Note that simultaneous is used in more formal contexts
than at the same time (see below):
- The two-minute silence in memory of the famous footballer
was observed simultaneously on all the football grounds
- The shots were fired simultaneously and three of them
hit their target.
- We arrived at the same time. I arrived at the same
time as Judy.
In informal and semi-formal registers, at the same time
can also be used to connect ideas between sentences. It introduces
a statement that slightly changes or contradicts the previous statement.
Simultaneously cannot be used in this way. Compare the following:
I admired her for her courage in the face of such adversity. At
the same time, I was slightly afraid of her. (NOT: Simultaneously
I was slightly afraid of her.)
Cities are becoming more and more crowded. At the same time,
people are using their cars less and less in city centres. (NOT:
Note from the all of the above examples that time adverbs which
indicate a definite point or period in time are usually,
though not always, placed in end position in the clause.