The word "admeasure" means to measure or apportion something. Its antonyms would therefore be words that convey the opposite of measuring or apportioning. Some potential antonyms could be distribute, scatter, disperse, or diffuse. These words suggest a lack of precision or control in allocating resources or dividing things up. Another possible antonym for "admeasure" might be "undivided," which implies a state of wholeness rather than being segmented or divided up into smaller portions. Other antonyms could include consolidate, unite, or centralize, as these words suggest bringing things together rather than breaking them apart by measuring or apportioning them.