- (often followed by of) along the side of; along beside: alongside the quay
- along the side of some specified thing: come alongside
WordReference Random House Learner's Dictionary of American English © 2026
a•long•side /əˈlɔŋˈsaɪd, əˈlɑŋ-/USA pronunciation
adv.
prep.
WordReference Random House Unabridged Dictionary of American English © 2026- along or at the side of something:We brought the boat alongside.
prep.
- by the side of:We brought the boat alongside the dock.
- Idioms, Informal Termsalongside of,
- beside;
alongside:parked alongside of the house.
- beside;
a•long•side
(ə lông′sīd′, ə long′-),USA pronunciation adv.
prep.
- along, by, at, or to the side of something:We brought the boat alongside.
prep.
- beside;
by the side of:The dog ran alongside me all the way. - Informal Terms alongside of, compared with:Alongside of his brother, he is no student at all.
- along + side1 1700–10
Collins Concise English Dictionary © HarperCollins Publishers::
alongside /əˈlɒŋˌsaɪd/ prep
'alongside' also found in these entries (note: many are not synonyms or translations):
aboard
- abreast
- anent
- Dome of the Rock
- double-park
- draw
- dyke
- extrinsic
- free alongside ship
- free on board
- guest rope
- handrail
- intrinsic
- levee
- para-
- parable
- parabola
- parallel
- paregoric
- pavement
- port
- Red Ensign
- sidewalk
- terrace
- waterfront
- White Ensign
- accommodation ladder
- appose
- bicycle path
- board
- boom
- box stoop
- breast
- breast line
- bridge
- broom
- coast
- FAS
- FFA
- heave
- house
- hug
- lap
- lay
- lie-by
- longeron
- marginal sea
- para
- platform
- topstitch