proliferate
verb /prəˈlɪfəreɪt/
  /prəˈlɪfəreɪt/
 [intransitive]Verb Forms
| present simple I / you / we / they proliferate |  /prəˈlɪfəreɪt/  /prəˈlɪfəreɪt/ | 
| he / she / it proliferates |  /prəˈlɪfəreɪts/  /prəˈlɪfəreɪts/ | 
| past simple proliferated |  /prəˈlɪfəreɪtɪd/  /prəˈlɪfəreɪtɪd/ | 
| past participle proliferated |  /prəˈlɪfəreɪtɪd/  /prəˈlɪfəreɪtɪd/ | 
| -ing form proliferating |  /prəˈlɪfəreɪtɪŋ/  /prəˈlɪfəreɪtɪŋ/ | 
- to increase rapidly in number or amount synonym multiply- Books and articles on the subject have proliferated over the last year.
- Time passed and animal life proliferated.
 Word Originlate 19th cent.: back-formation from proliferation.