ingenuitous

— I hope all who try to make easels will meet with success, as I did, but I fear all cannot hope to be cheered, as I was when mine was first exhibited, by the astonished and admiring exclamation of, “O-o-o my ! Isn’t it pretty? How ingenuitous you be!” But never mind; doubtless it will be only because your friends have not sufficient command of pure English to express their unbounded admiration.