Crossword puzzle clue "tongue with six phonetic tones"

Tongue with six phonetic tones

Campaign about which Rumsfeld said in 2003 "it could last six days, six weeks - I doubt six months"

Language with six tones

Eternal, and a hint to this puzzle's phonetic theme

Sailor's OK, and a phonetic hint to this puzzle's theme

Like little, glittering eyes ... and a phonetic hint to this puzzle's four longest answers

"Shut up!" ... or a phonetic hint to this puzzle's theme

Punny pianist who promoted "phonetic punctuation"