The last sentence.
The little old man was able to dissemble himself as a friendly car salesman.
She tried to dissemble her true feelings by putting on a smile and pretending everything was fine.
we are so used to dissembling with others that in time we come to deceive and dissemble with ourselves
no
dissemble
to undo or to take apart.
It means to tell a lie.
I believe the word "dissembled" would rhyme. "Dissemble" means: "to put on a false appearance : conceal facts, intentions, or feelings under some pretense."
Deception, falsify
The dissemble is satan
The clincher sentence for "The Tell-Tale Heart" is "Villains!" I shrieked, "dissemble no more! I admit the deed!—tear up the planks!—here, here!—it is the beating of his hideous heart!" This final revelation by the narrator exposes his guilt and descent into madness.