faithlessly

But still she thought with bitter and remorseful feelings of him thus deliberately and faithlessly renounced.

Now, when Fru Kongstrup had the right to shake heaven and earth—so faithlessly had they treated her—now she was silent.

We shall fulfil our oath, and not faithlessly desert the banner which we have hitherto followed.

Many records there are of treaties faithfully kept by the Indians and faithlessly broken by the colonists.

Schweckerle had to bite into a bitter apple several times, as one after another of his children faithlessly abandoned him.