deepen (suomeksi)

syventää (v: to make deep or deeper / to make darker or more intense / to make more poignant / to make lower in tone / to make more thorough or extensive / to make more intimate / to make more sound or heavy)
tummentaa (v: to make darker or more intense)
voimistaa (v: to make more poignant)
vahvistaa (v: to make more poignant)
madaltaa (v: to make lower in tone)
syvetä (v: to become deeper / to become darker more intense / to become lower in tone / to become more thorough or extensive / to become more intimate / to become more sound or heavy)
voimistua (v: to become darker more intense)
vahvistua (v: to become darker more intense)
pahentua (v: to become darker more intense)
madaltua (v: to become lower in tone)
parantua (v: to become more thorough or extensive)