Definition from Wiktionary, the free dictionary
alongside (not comparable)
along the side; by the side; side by side with
See also 
- Together with or at the same time.
- The nurse worked alongside the doctor.
- 2011 September 2, Phil McNulty, “Bulgaria 0-3 England”, BBC:
- The Italian opted for Bolton's Cahill alongside captain John Terry - and his decision was rewarded with a goal after only 13 minutes. Bulgaria gave a hint of defensive frailties to come when they failed to clear Young's corner, and when Gareth Barry found Cahill in the box he applied the finish past Nikolay Mihaylov.