From Longman Dictionary of Contemporary Englishin the thick of somethingin the thick of somethingTAKE PART/BE INVOLVEDinvolved in the busiest, most active, most dangerous etc part of a situation Brown hopes to be back in the thick of the action as soon as possible. → thick
Examples from the Corpus
in the thick of something• Standing up for what she believed in, fighting in the thick of things, Amelia blossomed.• Harvard in the thick of the Ivy League title chase?• He seems most at home in the thick of a hectic scrap for victory.• The school is in the thick of a war zone between two rival gangs.• Meanwhile, you can picture me in the thick of it.• A.. He really has enjoyed being right in the thick of things and having an input.• She wanted in, right in the thick of it.• I am not saying he doesn't deserve something if he was in the thick of it.• Williams was wounded in the thick of the battle. 