The word "un-liquidated" refers to something that has not been settled or paid off. Its antonyms would therefore be terms that mean "settled" or "paid off". Some antonyms for "un-liquidated" include "liquidated", "settled", "resolved", "satisfied", "cleared", "discharged", "balanced", and "canceled". For example, if a debt has been "liquidated", it means that it has been paid off in full. If a dispute has been "resolved", it means that a decision has been made to settle the issue. Alternatively, if a balance has been "discharged", it means that the amount owed has been fully paid and settled.