balmy adj.

c. 1200, basme, "oily, resinous aromatic substance exuding naturally from shrubs of the genus Commiphora," from Old French basme, baume, balme "balsam, balm" (12c., Modern French baume), from Latin balsamum, from Greek balsamon "balsam," from Hebrew (Semitic) basam "spice," which is related to Aramaic busma, Arabic basham "balsam, spice, perfume." The spelling was refashioned 15c.-16c. on the Latin model. Compare balsam.

As the name of a tree which yields the substance, it is attested from late 14c.; from mid-15c. it was extended to various fragrant garden herbs. Also by extension, "any aromatic preparation used in healing wounds or soothing pain, or as a perfume or in anointing" (late 14c.). Hence the transferred sense of "healing or soothing influence" (1540s). Biblical Balm of Gilead (esteemed for its medicinal properties) is from Coverdale (Jeremiah viii.22); the Hebrew word there is tsori, which was rendered in Septuagint and Vulgate as "resin" (Greek rhetine, Latin resina).

adjective suffix, "full of or characterized by," from Old English -ig, from Proto-Germanic *-iga- (source also of Dutch, Danish, German -ig, Gothic -egs), from PIE -(i)ko-, adjectival suffix, cognate with elements in Greek -ikos, Latin -icus (see -ic). Originally added to nouns in Old English; used from 13c. with verbs, and by 15c. even with other adjectives (for example crispy). Adjectives such as hugy, vasty are artificial words that exist for the sake of poetical metrics.

1530s, "frothing, covered with barm;" see barm + -y (2). The figurative sense of "excited, flighty, bubbling with excitement" is from c. 1600. The meaning "foolish" (1892) probably is an alteration of balmy (q.v.).