Patient person to come in like this (5)
I believe the answer is:
stoic
'patient person' is the definition.
(I've seen this in another clue)
'to come in like this' is the wordplay.
I cannot really understand how this works, but
'to' is found in the answer.
'like' could be 'sic' (I've seen this before) and 'sic' is located in the leftover letters.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for stoic that I've seen before include "Impassive type" , "Person indifferent to pleasure or pain" , "Resigned" , "Long-suffering type; follower of Zeno" , "not given to complaining" .)