-oniezh

== Breton == === Etymology === From -on (“noun suffix”) + -iezh (“abstract noun suffix”). Compare Cornish -onieth. === Suffix === -oniezh f Forms nouns for sciences/studies; -logy, -ology ‎yezh (“lanugage”) + ‎-oniezh → ‎yezhoniezh (“linguistics”) ‎stered (“stars”) + ‎-oniezh → ‎steredoniezh (“astronomy”) ==== Derived terms ====