Unilateral or biased, favoring one side or perspective over another. The debate was criticized for being one-sided, as it only presented arguments from the government's perspective.
Involving or affecting only one side of a situation or relationship. Their friendship was one-sided, with Jane always making the effort to stay in touch while Sarah rarely reciprocated.
Printed or occurring on only one side of a sheet, object, etc. Please print the report on one-sided pages only.
So disproportionately unequal or lopsided that one participant or side overwhelmingly dominates. The match was completely one-sided; the visitors never had a chance.