Significados de inexcusable thoughtlessness en inglés

It was no intentional or deliberate malice that induced me to act towards you as I did, but inexcusable thoughtlessness alone.

We do not realize his existence, his presence, his devices; and so we often do his work from sheer ignorance or inexcusable thoughtlessness about it.

"It could only have been in a moment of inexcusable thoughtlessness that Nature gave a child to such a giddy little woman!"