intervary

From inter- +‎ vary.

intervary (third-person singular simple present intervaries, present participle intervarying, simple past and past participle intervaried)

1. (obsolete) To alter or vary between; to change between.
   • 1827, James Rush, The Philosophy of the Human Voice:

     we may regard half the words of language as emphatic : since they are perpetually inter-varying by slight differences in force , and quantity

   • 1998, Alan A. Jones, Towards a lexicogrammar of Mekeo: an Austronesian language of West Central Papua:

     The /w/ in NWMek represents a weak variety of [w] pronounced with spread lips, freely intervarying with a true vowel [o].

• “intervary”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.