(redirected fromAnticholinergic agents) Thesaurus Medical Related to Anticholinergic agents:theophylline an·ti·cho·li·ner·gic (ăn′tē-kō′lə-nûr′jĭk, ăn′tī-) adj. Inhibiting or blocking the physiological action of acetylcholine at a receptor site:anticholinergic drugs. ...