Definify.com
Webster 1913 Edition
Breathlessness
Breath′less-ness
,Noun.
 The state of being breathless or out of breath. 
Webster 1828 Edition
Breathlessness
BREATH'LESSNESS
,Noun.
  Definition 2025
breathlessness
breathlessness
English
Noun
breathlessness (uncountable)
- The state of being breathless or out of breath.
 - (pathology) Difficult or labored respiration, dyspnea, shortness of breath
 
Translations
state of being breathless or out of breath
  | 
difficult respiration — see shortness of breath