SHOVE

shove a creature, either to knock it prone or push
it away from you. If you're able to make multiple
attacks with the Attack action, this attack replaces
one of them.
The target must be no more than one size larger
than you and must be within your reach. Instead
of making an attack roll, you make a Strength
(Athletics) check contested by the target's Strength
(Athletics) or Dexterity (Acrobatics) check
(the target chooses the ability to use).