exponential
adjective
uk/ˌekspəʊˈnentʃəl/ usbecoming quicker and quicker:
We are looking for exponential growth in our investment.
There has been an exponential increase in sales since the new advertising campaign began.
exponentially
adverb formal uk/ˌekspəˈnenʃəli/ us/-spoʊ-/
Our business is growing exponentially.