time·ly 
/ˈtaɪmli/ adjective
time·li·er; time·li·est /ˈtaɪmli/ adjective [or more timely; most timely] : happening at the correct or most useful time : not happening too late
▪ Her very timely book examines the effects of global warming on the world's climates. ▪ a timely decision/warning ▪ She always responds to my requests in a timely fashion/manner. — opposite untimely
▪ Her very timely book examines the effects of global warming on the world's climates. ▪ a timely decision/warning ▪ She always responds to my requests in a timely fashion/manner. — opposite untimely
— time·li·ness noun [noncount]
▪ the timeliness of the warning
▪ the timeliness of the warning
