pennaeth

Welsh

From pen (“head; chief”) +‎ -aeth.

Lua error in Module:parameters at line 360: Parameter 1 should be a valid language or etymology language code; the value "cy-N" is not valid. See WT:LOL and WT:LOL/E. IPA^(key): /ˈpɛnaɨ̯θ/
Lua error in Module:parameters at line 360: Parameter 1 should be a valid language or etymology language code; the value "cy-S" is not valid. See WT:LOL and WT:LOL/E. IPA^(key): /ˈpɛnai̯θ/

pennaeth m or f by sense (plural penaethiaid or penaethaid or penaethau or penaethion)

Welsh mutation
radical	soft	nasal	aspirate
pennaeth	bennaeth	mhennaeth	phennaeth
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.