The expression "wash hands of" means to disassociate oneself from a particular situation or responsibility. Its antonyms, on the other hand, would suggest entanglement or involvement in a matter. Some antonyms for "wash hands of" could include "take responsibility," "get involved," "assume ownership," "accept blame," "shoulder burdens," or "bear accountability." These words imply a willingness to be accountable for actions or decisions, as opposed to walking away from them. In many situations, taking responsibility and owning up to mistakes can be a sign of strength and integrity, and can lead to growth and learning.