Most two ton is an adjective that means very heavy or extremely weighty. Some possible antonyms for this phrase could include lightweight, featherweight, or even insubstantial. These opposites convey a sense of lightness, delicacy, or simplicity, which stands in stark contrast to the overwhelming force and massiveness of most two ton. Other antonyms might include nimble, agile, lithe, or fleet, which suggest mobility, speed, dexterity, and grace rather than sheer size and heft. However, it's important to note that antonyms are not always exact opposites, and can vary depending on the context and usage of the original word or phrase.