Finnish word tupakointi comes from Finnish tupakoida ((intransitive) to smoke (to consume tobacco products).), Finnish -nti

Detailed word origin of tupakointi

Dictionary entry	Language	Definition
tupakoida	Finnish (fin)	(intransitive) to smoke (to consume tobacco products).
-nti	Finnish (fin)	Form action nouns from verbs whose first infinitive ends with a diphthong + -da/-dä.
tupakointi	Finnish (fin)	Smoking (habit and practice of consuming tobacco by inhaling its smoke).

Words with the same origin as tupakointi