Definify.com
Webster 1913 Edition
Regardless
Re-gard′less
,Adj.
 1. 
Having no regard; heedless; careless; 
as, 
. regardless 
of life, consequences, dignityRegardless 
of the bliss wherein he sat. Milton.
2. 
Not regarded; slighted. 
[R.] 
Spectator.
 
Syn. – Heedless; negligent; careless; indifferent; unconcerned; inattentive; unobservant; neglectful. 
– Re-gard′less-ly
, adv.
 Re-gard′less-ness
, Noun.
Webster 1828 Edition
Regardless
REG'ARDLESS
,Adj.
  1.
  Not looking or attending to; heedless; negligent; careless; as regardless of life or of health; regardless of danger; regardless of consequences.Regardless of the bliss wherein he sat.
2.
  Not regarded; slighted.Definition 2025
regardless
regardless
English
Adjective
regardless (comparative more regardless, superlative most regardless)
-  Having no regard; heedless; careless.
-  1843, Edgar Allan Poe, The Black Cat :
- I grew, day by day, more moody, more irritable, more regardless of the feelings of others.
 
 
-  1843, Edgar Allan Poe, The Black Cat :
Derived terms
Translations
having no regard
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Adverb
regardless (comparative more regardless, superlative most regardless)
-  Without attention to warnings or indications of bad consequences.
- Tatiana knew the cauliflower was purple, but she ate it regardless.
 
Synonyms
Translations
actioned in a way which shows no consideration
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Preposition
regardless
-  Paying no attention to; regardless of.
- Tatiana ate the cauliflower regardless of its colour.
 
Translations
paying no attention to
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Usage notes
- Phrases such as 'regardless if' and 'regardless to' are technically incorrect.