regardless

regard +‎ -less

• (General American) IPA^(key): /ɹɪˈɡɑɹd.lɪs/
• (Received Pronunciation) (BE): IPA^(key): /ɹɪˈɡɑːd.lɪs/

• Audio (Southern England)

  (file)

regardless (comparative more regardless, superlative most regardless)

1. Having no regard; heedless; careless.
   • 1815, Jane Austen, Emma, volume III, chapter 15:

     Always deceived in fact by his own wishes, and regardless of little besides his own convenience.

   • 1843, Edgar Allan Poe, The Black Cat :

     I grew, day by day, more moody, more irritable, more regardless of the feelings of others.

2. despite everything; despite the situation

   He did it, regardless.

• irregardless, irrespective; See also Thesaurus:careless

• regardless of

regardless (comparative more regardless, superlative most regardless)

1. Without attention to warnings or indications of bad consequences.

   Tatiana knew the meat had passed its expiry date, but she ate it regardless.

• anyhow, anyway, at any rate, come what may, in any case; See also Thesaurus:regardless

regardless

1. (proscribed) Synonym of regardless of; paying no attention to

   Tatiana ate the cauliflower regardless its colour.

• The phrase 'regardless to' is generally considered incorrect.
• Phrases 'regardless if', 'regardless of if' and 'regardless whether' are generally considered incorrect, with 'regardless of whether' being the preferred wording.