Nouns

(n)consonanta speech sound that is not a vowel
(n)consonanta letter of the alphabet standing for a spoken consonant

Adjectives

(s)consonant, harmonic, harmonical, harmonized, harmonisedinvolving or characterized by harmony
(s)accordant, agreeable, conformable, consonant, concordantin keeping“salaries agreeable with current trends”, “plans conformable with your wishes”, “expressed views concordant with his background”