Similar words: inexcusable, excusable, accusable, inexorably, excuse, excused, inexplicably, inextricably. Meaning: [‚ɪnɪk'skjuːzəblɪ] 
adv. 1. in an unpardonable manner or to an unpardonable degree 2. without any excuse.
adv. 1. in an unpardonable manner or to an unpardonable degree 2. without any excuse. 
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1. She had been inexcusably careless.
2. I think the party is inexcusably pandering to the senior citizens.
3. Reductionism Sociologists of religion frequently appear inexcusably reductionist to those whom they study.
4. He was inexcusably cruel to his wife.
5. Her heart misgave her that she had acted inexcusably.
6. The defending has been inexcusably bad at times.
7. Such source countries are being inexcusably feeble in not demanding such a tax.
8. I think this editor, who did something so inexcusably wrong, should not only apologize to the victim, but also to other editors, the media(sentencedict .com), and the press association.
9. That was inexcusably stupid, and will set back your plans quite a bit.
10. For the fact is that the plan on offer is a stinker — and inexcusably so.
11. Initially deemed a failure, the new design has since won over those who regard consistency as inexcusably boring.
12. But far fewer people get as exercised over the brainpower that is not being tapped in this country on account of an inexcusably awful education system.
More similar words: inexcusable, excusable, accusable, inexorably, excuse, excused, inexplicably, inextricably, excuse me, usable, unusable, reusable, passably, advisably, in excess of, in exchange for, unexceptionable, inexpressibly, inexorable, inexplicable, inextricable, ineffably, inevitably, inextinguishable, inequitably, inescapably, ineluctably, excursion, excursive, exculpate.