pantsless

NOT to be confused with bottomless (when a character's lower half is entirely naked)

When a character is shown wearing "normal" topwear, such as a shirt, jacket, hoodie or sweater, but is only wearing underwear, such as panties, thong or a jockstrap, or swimwear, such as a bikini bottom.

a character only wearing underwear should not be tagged as pantsless (even if wearing an undershirt with their underpants or panties), use underwear only
a character that is topless should never be tagged as pantsless
If a character is wearing a skirt or dress, and no undewear, use no underwear

Missing Clothes Cheat Sheet

(Remember to exercise tag_what_you_see: if you can't tell whether a character is wearing underwear, ignore it.)

topwear	underwear	bottomwear	Tag(s) to use
No	No	No	nude or mostly_nude
No	No	Yes	topless + no_underwear
No	Yes	No	underwear_only
No	Yes	Yes	topless
Yes	No	No	bottomless
Yes	No	Yes	no_underwear
Yes	Yes	No	pantsless
Yes	Yes	Yes	fully_clothed