Threaten the people one is with (6)
I believe the answer is:
menace
'threaten' is the definition.
(I know that threaten can be written as menace)
'people one is with' is the wordplay.
I cannot quite see how this works, but
'people' could be 'men' (men are people) and 'men' is located in the answer.
'one' could be 'ace' (ace has a value of one in some card games) and 'ace' is found in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'the' is the link.
Can you help me to learn more?
(Other definitions for menace that I've seen before include "Threat, show of hostility" , "Intimidation" , "Threat; threaten" , "Intimidate" , "peril" .)