Mesi asexual and mesi aromantic: Someone who is ace-spec/aro-spec but is not fully asexual/aromantic (suptiliasexual/suptiliaromantic). Comes from the word mesial.
Why these terms are necessary:
We have a word to specify people who are completely asexual/aromantic (suptiliasexual/suptiliaromantic). However, there is currently no unambiguous term to refer to people who are ace-spec/aro-spec but aren’t suptiliasexual/suptiliaromantic.
The word ace-spec/aro-spec is sometimes used to refer to these people, however these terms are for the entire spectrum, which by definition includes suptiliasexuals/suptiliaromantics, so using this term in this way is inaccurate and is ambiguous.
The term greyasexual/greyromantic can also be used to refer to these people, however grey is also it’s own individual identity. Grey is much more commonly used as a specific identity rather then as an umbrella term, which can make it confusing when the umbrella term definition is used (especially when both definitions are used in the same paragraph).
Mesi ace and mesi aro have the same definition as greyasexual/greyromantic (umbrella term definition) but are completely unambiguous in their meaning.