The word "tenuities" refers to the quality or state of being thin or slender. Some antonyms for this term would be words that describe the opposite: thick, bulky, or chubby. These words denote the quality of being wide, heavy or full, and convey a sense of substance and solidity, instead of fragility and delicacy. Other antonyms for tenuities might include words like strong, sturdy, robust, or beefy, which suggest the quality of having strength, and a certain degree of resistance to being easily broken or damaged. Whether in the context of physicality or more metaphorical meanings, antonyms for tenuities can help us to better understand the nuances of language and thought.