time·keep·er 
/ˈtaɪmˌki:pɚ/ noun
plural time·keep·ers /ˈtaɪmˌki:pɚ/ noun [count] 1 : a person who controls or records official times during a contest (such as a race or game)
▪ The timekeeper forgot to stop the clock during the team's last time-out. 2 Brit — used in the phrases good timekeeper and bad/poor timekeeper to say that someone is or is not good about arriving at the correct or expected time ▪ We expect our employees to be good timekeepers.
▪ The timekeeper forgot to stop the clock during the team's last time-out.
— time·keep·ing /ˈtaɪmˌki:pɪŋ/ noun [noncount]
/ˈtaɪmˌki:pɪŋ/ noun [noncount]
