Express doubt that one of us had spilt whiskey (3,3,3)
I believe the answer is:
hum and haw
'express doubt' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.
'one of us had spilt whiskey' is the wordplay.
'one of us' becomes 'human' (I've seen this in another clue).
'spilt' indicates an anagram.
'whiskey' becomes 'W' (phonetic alphabet: alpha, bravo, charlie etc.).
'had' is an anagram of 'dha'.
'human'+'dha'+'w'='HUM AND HAW'
'that' is the link.
Can you help me to learn more?
(Other definitions for hum and haw that I've seen before include "Hesitate in decision making" , "vacillate" , "Hesitate, make indecisive sounds" , "Shilly-shally" .)