actuate
verb /ˈæktʃueɪt/
  /ˈæktʃueɪt/
 (formal)Verb Forms
| present simple I / you / we / they actuate |    /ˈæktʃueɪt/   /ˈæktʃueɪt/  | 
| he / she / it actuates |    /ˈæktʃueɪts/   /ˈæktʃueɪts/  | 
| past simple actuated |    /ˈæktʃueɪtɪd/   /ˈæktʃueɪtɪd/  | 
| past participle actuated |    /ˈæktʃueɪtɪd/   /ˈæktʃueɪtɪd/  | 
| -ing form actuating |    /ˈæktʃueɪtɪŋ/   /ˈæktʃueɪtɪŋ/  | 
- actuate something to make a machine or device start to work synonym activate
- The timer must have been actuated by radio control.
 
 - [usually passive] to make somebody behave in a particular way synonym motivate
- be actuated by something He was actuated entirely by malice.
 
 
Word Originlate 16th cent.: from medieval Latin actuat- ‘carried out, caused to operate’, from the verb actuare, from Latin actus ‘event, thing done’, act- ‘done’, from the verb agere, reinforced by the French noun acte. The original sense was ‘carry out in practice’, later ‘stir into activity, enliven’; sense (1) dates from the mid 17th cent.