• Bengali Word ঘনিষ্ঠ English definition (adjective) 1 very thick; very close. 2 very near; closely related: ঘনিষ্ঠ আত্মীয়. 3 very intimate: ঘনিষ্ঠ বন্ধু, an intimate friend; a bosom friend. ঘনিষ্ঠা (feminine) = ঘনিষ্ঠ. ঘনিষ্ঠতা (noun) a closeness; nearness; intimacy.