Lūcīfēr's definitions

leucocholy

though it seldom laughs or dances, nor ever amounts to what one calls joy or pleasure, yet is a good easy sort of a state

Or
a preoccupation with trivial or unimportant matters

Or

Opposite of melancholy

He had many leucocholy reflections of his old school days.

by Lūcīfēr November 18, 2019

Admixture

A mixture

Something mixed with something else

Air being a physical substance is an admixture of several gases

he felt that his work was an admixture of aggression and creativity

by Lūcīfēr December 2, 2019