Missed Bingo OTD: AEIKNTY

KYANITE: a blue silicate mineral. 

KYANITIC

KYANISE

KYANIZE

are all also variants. 

Also spelled CYANITE- which leads us to another set of words: 

CYANITIC

CYANIC

CYANID

CYANIDEd

CYANIN

CYANINE

CYANATE

CYANAMID

CYANAMIDE

All the ones that don't end with C take an S.