And for "grow" as in "grow a mustache," make use of nargh, as in nargh lochwIj "I'm growing a mustache." To indicate that you're doing it on purpose, you could say nargh lochwIj 'e' vIchaw' "I'm letting my mustache grow" or something similar. (QelIS boqHarmey – Alice's Adventures in Wonderland in Klingon, p. 235)