addiction · noun C or U /əˈdɪk.ʃən/
addiction
B2 when you cannot stop doing or taking something because you are addicted to it
Dictionary examples:
drug addiction
an addiction to alcohol
His addiction to computer games means he is spending far too much time indoors.
Learner example:
Sending text messages is an addiction which every teenager is obsessed with. (First Certificate in English; B2; Spanish)
