deepen

verb

Make or become deep or deeper.

SYNONYMS

aggravateamplifyaugmentboostdig deeperdig outencourageenhanceenrichescalateexacerbateexcavategrowheightenhollow outhot upincreaseinflameintensifymagnifymake deepermake/become worsemushroompromotereinforcescoop outscrape outsnowballstep upstrengthenworsen