ten·ta·tive 
/ˈtɛntətɪv/ adjective
/ˈtɛntətɪv/ adjective [more tentative; most tentative] 1 : not done with confidence : uncertain and hesitant
▪ a tentative smile ▪ the baby's first tentative steps 2 : not definite : still able to be changed
▪ We have tentative plans for the weekend. ▪ tentative approval
▪ a tentative smile ▪ the baby's first tentative steps
▪ We have tentative plans for the weekend. ▪ tentative approval
— ten·ta·tive·ly adverb
▪ We have tentatively made plans for the weekend. ▪ The meeting is tentatively scheduled for Friday.
▪ We have tentatively made plans for the weekend. ▪ The meeting is tentatively scheduled for Friday.
— ten·ta·tive·ness noun [noncount]
