Need roughly about a day to get it completed (5)
I believe the answer is:
ended
'completed' is the definition.
(synonyms)
'need roughly about a day' is the wordplay.
'roughly' is an anagram indicator.
'about' indicates putting letters inside.
'a day' becomes 'd' (abbreviation for day).
'need' anagrammed gives 'ened'.
'ened' going around 'd' is 'ENDED'.
'to get it' acts as a 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 ended that I've seen before include "Acclaim" , "'Our revels now are . . . . .' (The Tempest)" , "Finished, terminated" , "Brought to a finish" , "Concluded" .)