### Clue: Wassail not as spirited around start of November; Christmas is when you might bid them welcome (2-4)
### Answer: IN-LAWS 
 ### Explanation: Definition: Christmas is when you might bid them welcome
An envelope ('around') of N ('start of **N**ovember') in ILAWS, an anagram ('spirited') of 'w[as]sail' minus AS ('not as').