negligent
adjective /ˈneɡlɪdʒənt/
  /ˈneɡlɪdʒənt/
 - (law or formal) failing to give somebody/something enough care or attention, especially when this has serious results
- The company was found to have been grossly negligent.
 - negligent in something The hospital was negligent in the way it cared for this young man.
 - negligent in (not) doing something The school had been negligent in not informing the child's parents about the incident.
 
Oxford Collocations Dictionaryverbs- be
 - seem
 
- grossly
 - criminally
 
- in
 - over
 
 - (literary) (of a person or their manner) relaxed; not formal synonym nonchalant
- He waved his hand in a negligent gesture.
 - her negligent grace
 
 
Word Originlate Middle English: from Old French, or from Latin negligent- ‘disregarding’, from the verb negligere (variant of neglegere ‘disregard, slight’, from neg- ‘not’ + legere ‘choose, pick up’).