alongside UK /əˌlɒŋˈsaɪd/US /əˌlɔŋˈsaɪd/preposition 2adverb 1 preposition2 •Side by side with. •Together with or at the same time.The nurse worked alongside the doctor. adverb1 •Along the side; by the side; side by side; abreast.Ahoy! Bring your boat alongside.All of a sudden, another car drew up alongside.
