பொருள் : Difficult to penetrate. Incomprehensible to one of ordinary understanding or knowledge.
						 
						 
					
							எடுத்துக்காட்டு : 
							The professor's lectures were so abstruse that students tended to avoid them.
							A deep metaphysical theory.
							Some recondite problem in historiography.
							
					
							ஒத்த சொற்கள் : 
							abstruse, deep