"harmonious," 1785, from stem of Latin concentus "harmony" (see concent) + -al (1). Related: Concentually.
Entries linking to concentual
concent n.
"harmony, concord of sounds," 1580s, from Latin concentus "a singing together, harmony," from concinere "to sing or sound together," from con- "with, together" (see con-) + canere "to sing" (from PIE root *kan- "to sing"). Often misspelled consent or confused with that word.
-al 1
suffix forming adjectives from nouns or other adjectives, "of, like, related to, pertaining to," Middle English -al, -el, from French or directly from Latin -alis (see -al (2)).