eightsome

As an adjective weightsome

is of, pertaining to, possessing, or characterised by weight; weighty; weightful; heavy; grave; grievous.

As a noun eightsome is

a group of eight persons or things, one more than a sevensome and one less than a ninesome.

As a noun eightsome

is a group of eight persons or things, one more than a sevensome and one less than a ninesome.

As an adjective bightsome is

having an air of ease combined with activity; easy; light; active.

As an adjective lightsome

is emitting or manifesting light; luminous, radiant or lightsome can be upbeat; cheery; light graceful.

As a noun eightsome is

a group of eight persons or things, one more than a sevensome and one less than a ninesome.

As nouns the difference between eightsome and mightsome

is that eightsome is a group of eight persons or things, one more than a sevensome and one less than a ninesome while mightsome is (informal|regional|non-standard) a (little) bit; somewhat; a tad.

As a verb mightsome is

(dialectal) to be powerful.