what is ony?

ony (ˈəʊnɪ)

— determiner
a Scots word for any

determiner

Main Entry: de·ter·min·er
Pronunciation: \-ˈtər-mə-nər\
Function: noun
Date: circa 1530
: one that determines: as a : gene b : a word (as an article, possessive, demonstrative, or quantifier) that makes specific the denotation of a noun phrase

de·no·ta·tion   /ˌdinoʊˈteɪʃən/ Show Spelled[dee-noh-tey-shuhn] Show IPA
–noun
1. the explicit or direct meaning or set of meanings of a word or expression, as distinguished from the ideas or meanings associated with it or suggested by it; the association or set of associations that a word usually elicits for most speakers of a language, as distinguished from those elicited for any individual speaker because of personal experience. Compare connotation.
2. a word that names or signifies something specific: “Wind” is the denotation for air in natural motion. “Poodle” is the denotation for a certain breed of dog.
3. the act or fact of denoting; indication.
4. something that denotes; mark; symbol.
5. Logic .
a. the class of particulars to which a term is applicable.
b. that which is represented by a sign.

so what exactly does ony do to harm?...

har·mo·ny   /ˈhɑrməni/ Show Spelled[hahr-muh-nee] Show IPA
–noun, plural -nies.
1. agreement; accord; harmonious relations.
2. a consistent, orderly, or pleasing arrangement of parts; congruity.
3. Music .
a. any simultaneous combination of tones.
b. the simultaneous combination of tones, esp. when blended into chords pleasing to the ear; chordal structure, as distinguished from melody and rhythm.
c. the science of the structure, relations, and practical combination of chords.
4. an arrangement of the contents of the Gospels, either of all four or of the first three, designed to show their parallelism, mutual relations, and differences.
Use harmony in a Sentence
See images of harmony
Search harmony on the Web

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Origin:
1350–1400; ME armonye < MF < L harmonia < Gk harmonía joint, framework, agreement, harmony, akin to hárma chariot, harmós joint, ararískein to join together —Related forms non·har·mo·ny, noun, plural -nies. pre·har·mo·ny, noun —Synonyms 1. concord, unity, peace, amity, friendship. 2. consonance, conformity, correspondence, consistency. See symmetry. 3. Harmony, melody in music suggest a combination of sounds from voices or musical instruments. Harmony is the blending of simultaneous sounds of different pitch or quality, making chords: harmony in part singing; harmony between violins and horns. Melody is the rhythmical combination of successive sounds of various pitch, making up the tune or air: a tuneful melody to accompany cheerful words.

isn't etymology fun? :}