The meaning of SOAK is to lie immersed in liquid (such as water) : become saturated by or as if by immersion. How to use soak in a sentence. Synonym Discussion of Soak.

Soak laundry soap is the quick, easy way to clean your worthiest washables. The eco-friendly, no-rinse formulation is great for hand- or machine-washing— and for showing your laundry some love.