tonify
verb /ˈtəʊnɪfaɪ/
  /ˈtəʊnɪfaɪ/
 Verb Forms
| present simple I / you / we / they tonify |    /ˈtəʊnɪfaɪ/   /ˈtəʊnɪfaɪ/  | 
| he / she / it tonifies |    /ˈtəʊnɪfaɪz/   /ˈtəʊnɪfaɪz/  | 
| past simple tonified |    /ˈtəʊnɪfaɪd/   /ˈtəʊnɪfaɪd/  | 
| past participle tonified |    /ˈtəʊnɪfaɪd/   /ˈtəʊnɪfaɪd/  | 
| -ing form tonifying |    /ˈtəʊnɪfaɪɪŋ/   /ˈtəʊnɪfaɪɪŋ/  | 
- tonify something to make a part of the body firmer, smoother and stronger, by exercise or by applying special creams, etc.Topics Health and Fitnessc2