অর্থ : Marked by firm determination or resolution. Not shakable.
							উদাহরণ : 
							Firm convictions.
							A firm mouth.
							Steadfast resolve.
							A man of unbendable perseverence.
							Unwavering loyalty.
							
সমার্থক : firm, steadfast, steady, stiff, unbendable, unfaltering, unwavering
অর্থ : Without flaws or loopholes.
							উদাহরণ : 
							An ironclad contract.
							A watertight alibi.
							A bulletproof argument.
							
সমার্থক : bulletproof, unassailable, watertight