In ordinary language, right in position (5)
I believe the answer is:
prose
'in ordinary language' is the definition.
'prose' can be an answer for 'language' (I have seen 'Ordinary language ' mean 'prose' so perhaps 'language' could also mean 'prose'). I'm unsure of the 'in ordinary' bit.
'right in position' is the wordplay.
I cannot really see how this works, but
'right' could be 'r' (abbreviation) and 'r' is present in the answer.
'position' could be 'pose' (posing is a kind of positioning) and 'pose' is found within the leftover letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for prose that I've seen before include "Non-verse" , "Normal written language" , "Writings not in verse" , "Literary genre" , "Ordinary writing" .)