Keep the canon spelling petaQ, with lower-case q nowhere in the word and no apostrophe. Use petaQpu' for the ordinary plural and petaQmey when the plural itself is meant to sound insulting.
Keep the canon spelling petaQ, with lower-case q nowhere in the word and no apostrophe. Use petaQpu' for the ordinary plural and petaQmey when the plural itself is meant to sound insulting.
petaq changes the last Klingon consonant, and petaQ' adds an apostrophe that is not part of the canon spelling.
Listed in The Klingon Dictionary as an epithet. A later KLI paq'batlh clarification says petaQ is unrelated to taQ, normally takes -pu', and uses -mey for extra insult.