Manx edit

Etymology edit

From co- +‎ plaaney + -agh.

Adjective edit

co-phlaanagh

  1. (geometry) coplanar

Mutation edit

Manx mutation
Radical Lenition Eclipsis
co-phlaanagh cho-phlaanagh go-phlaanagh
Note: Some of these forms may be hypothetical. Not every
possible mutated form of every word actually occurs.