opponent noun
1 person who plays against sb
ADJ. chief, main | dangerous, tough | worthy
VERB + OPPONENT attack, hit | beat, defeat | get past, outfox, outmanoeuvre, outwit | face Today she faces her toughest opponent on Centre Court. | mark | tackle | bring down, foul > Special page at SPORT
2 sb who disagrees with sb's actions/plans/beliefs
ADJ. chief, leading, main | bitter, fierce, formidable, strong, vigorous | outspoken, vocal, vociferous | worthy | political | government
You can also check other dicts: opponent (English, 中文解释 ), wordnet sense, Collins Definition