Definition from Wiktionary, the free dictionary
Derived terms 
- Without attention to warnings or indications of bad consequences.
- Tatiana knew the cauliflower was purple, but she ate it regardless.
actioned in a way which shows no consideration
- Paying no attention to; regardless of.
- Tatiana ate the cauliflower regardless of its colour.
paying no attention to
Usage notes 
- Phrases such as 'regardless if' and 'regardless to' are technically incorrect.