New Year tends to make us inactive (9)
I believe the answer is:
sedentary
'inactive' is the definition.
(similar in meaning)
'new year tends' is the wordplay.
'new' indicates an anagram.
'year'+'tends'='yeartends'
'yeartends' anagrammed gives 'SEDENTARY'.
'to make us' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for sedentary that I've seen before include "Tending to spend too much seated and taking little exercise" , "Yes, red ant could be sitting" , "not exercising one's talents?" , "Involving little or no energy" , "Tending to stay seated" .)