§ Elements in Quenya and Sindarin Names The Silmarillion

quen- (quet-) 'say, speak' in Quendi(Calaquendi, Laiquendi, Moriquendi), Quenya, Valaquenta, Quenta Silmarillion. The Sindarin forms have p (or b) for qu; e.g. pedo 'speak' in the inscription on the West-gate of Moria, corresponding to the Quenya stem quet; and Gandalf's words before the gate, lasto beth lammen 'listen to the words of my tongue', where beth 'word' corresponds to Quenya quetta.