The antonyms for "iced up" are words and phrases that convey the opposite meaning. The term "iced up" refers to something that is cold, frozen, or covered with ice. The antonyms of "iced up" include phrases like "heated up", "warmed up", "thawed out", and "melted". These words suggest warmth, softness, and fluidity, which contrast with the cold, hard, and frozen nature of "iced up". Other antonyms for "iced up" might include "liquid", "flowing", "running", "warm", and "soft", all of which suggest movement and fluidity, which are the opposite of the immobility and hardness of ice.