As adjectives the difference between spinless and spitless
is that spinless is (physics) without spin while spitless is having a dry mouth; greatly frightened; (see usage notes below).
spinless
English
Adjective
(-)
(physics) Without spin. spitless
English
Adjective
(-)
Having a dry mouth; greatly frightened; (see usage notes below).
Usage notes
* This term is primarily found in the verb phrase . It may be considered a euphemism for (shitless), or as a more evocative variant of certain uses of (witless) and (speechless).
See also
* shitless
* witless