tihentää
Tihentää is a Finnish verb that translates to "to thicken," "to condense," "to intensify," or "to make denser" in English. It can be used in a variety of contexts, both literal and figurative.
In a physical sense, tihentää can describe the process of making a liquid or semi-liquid substance thicker.
Figuratively, tihentää can describe the intensification of something abstract. This could include making a relationship closer