Thicken

grubieć

((intransitive) to become wider)

gęstnieć

((intransitive) to become more viscous)

pogrubiać

((transitive) to make wider)

pogrubić

((transitive) to make wider)

zagęszczać

((transitive) to make more viscous)

zagęścić

((transitive) to make more viscous)

zgrubieć

((intransitive) to become wider)

zgęstnieć

((intransitive) to become more viscous)