What does "groomsman" mean?

A man who serves as one of a number of attendants to a bridegroom at a wedding, one of whom is the best man.

What is a synonym for "groomsman"?

Common synonyms include: best man, paranymph, usher.

noun

noun ·Rare ·Advanced level

Noun

1
A man who serves as one of a number of attendants to a bridegroom at a wedding, one of whom is the best man.
"The Scotchman, who assisted as groomsman, was of course the only one present, beyond the chief actors, who knew the true situation of the contracting parties."
2
a male attendant of the bridegroom at a wedding wordnet

"Tom will be a groomsman at my wedding."

From groom + -s- + man.