Called out greeting to short president, certain the job involves a lot of responsibility (4-8)
I believe the answer is:
high-pressure
'job involves a lot of responsibility' is the definition.
I can't tell whether this definition defines the answer.
'called out greeting to short president certain' is the wordplay.
'called out' shows a homophone (sound like).
'greeting' becomes 'hi' (hi is a kind of greeting).
'to short president' becomes 'pres' (I can't justify this - if you can you should give a lot more credence to this answer).
'certain' becomes 'sure' (synonyms).
'hi' is a homophone of 'high'.
'high'+'pres'+'sure'='HIGH-PRESSURE'
'the' is the link.
Can you help me to learn more?
(Other definitions for high-pressure that I've seen before include "(Of selling) aggressively persistent" , "Aggressive (selling)" , "Stressful; persuasive" , "Aggressive, forceful" .)