to give impetus to sth
1impetus — noun ADJECTIVE ▪ considerable, great, powerful, strong, tremendous ▪ main, major ▪ immediate, initial …
2steam up — MIST (UP/OVER), fog (up), become misty/misted. → steam * * * verb Etymology: steam (II) + up, adverb transitive verb 1. : to cover with steam or vapor …
3necessary — adj. VERBS ▪ appear, be, prove, seem ▪ become ▪ remain ▪ make sth ▪ …
4keep the ball rolling — phrasal : to give continued impetus or momentum to an activity already in progress when the conversation began to lag, the host always kept the ball rolling by introducing a new topic of common interest without seeming to have done it purposely * …
