Wiktionary
causelessly
adv. Without cause; in a causeless manner.
Usage examples of "causelessly".
She felt her heart stop causelessly in the kind of gasp one feels in moments of anticipation.
Never has a nation so deliberately and so causelessly committed suicide.
I do not care to be admired causelessly, emotionally, intuitively, instinctively—or blindly.
All these noises deepened and became substantial to the listener’s ear, till she could distinguish every soft and dreamy accent of the love songs, that died causelessly into funeral hymns.
Knowing that Orr desperately needed confirmation, he would not causelessly withhold it if he could give it.