pitilessly

But when that failed, he waged war pitilessly and cut deals relentlessly.

We found ourselves seeking justification, clinging passionately to a situation that was coldly, pitilessly, impossible and fated.

It swept the cross-streets of the city as pitilessly as the search-light of a man-of-war sweeps the ocean.

It is you yourselves who pitilessly ridicule the uncultured Indian and deny him his rights, on the ground that he is ignorant.

Though they were young, they walked with bowed heads, which gait of grief the sun's rays smiled on pitilessly.

Rainbows have spanned her sky like a glory, and storms have beat pitilessly on her defenceless head.