Austin Sendek, a physics student at the University of California has started a campaign to establish ‘hella’ as the SI prefix for 10²⁷. In response, B Todd Huffman wrote a letter to Physics World, suggesting ‘tini’ (pronounced with an ‘ee’ sound) for 10^-27, insi (pronounced ‘eensey’) for 10^-30 and winsi (pronounced ‘weensey’) for 10^-33.

He concluded, “I have tried to think of prefixes that would come in on the high end beyond ‘hella’ but unfortunately I could think of nothing that could not be interpreted as a rude word.”