A man will leave his father and mother and be UNITED TO his wife

[tonychanyt]

Berean Literal Bible, Mark 10:

7 For this reason a man will leave his father and mother and be united to his wife

Strong's Greek: 4347. προσκολλάω (proskollaó) — 2 Occurrences

HELPS Word-studies:

4347 proskolláō (from 4314 /prós, "towards" and 2853 /kolláō, "to glue") – properly, "to glue in" (from extending towards), i.e. to cleave (join with) someone in a personal ("interfacing") relationship. 4347 /proskolláō (literally, "glue to another") suggests "a more permanent association, focusing upon reciprocal relations" (L & N, 1, 448, fn 5; so also in Plato).

A parallel account in Matthew 19:

5b On account of this a man will leave the father and mother and be joined with his wife

Strong's Greek: 2853. κολλάω (kollaó) — 12 Occurrences

At Biblehub, 6 versions use προσκολληθήσεται and 8 versions dropped the prefix προσ.

It seems that in the context of husband and wife, κολλάω and προσκολλάω were used interchangeably.