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"alongside" is also used as a crossword clue. If that's what you saw, the answer is often beside (6 letters).
Definitions
Next to, beside, or together with something else.
Word origin
From along + side; compare alongsides.
Used in a sentence
“Ahoy! Bring your boat alongside.”
“All of a sudden, another car drew up alongside.”
“The nurse worked alongside the doctor.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Running parallel”9 letters
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