可叹

可叹	kě tàn	lamentable / sad(ly)
可	kě	(prefix) can; may; able to; -able / to approve; to permit / to suit / (particle used for emphasis) certainly; very / but; however
可	kè	used in 可汗
叹	tàn	to sigh / to exclaim
叹	tàn	variant of 叹