English for Today by Ganiu Abisoye Bamgbose (Dr GAB)
English in Use
I’ll come tomorrow if I’m ~opportuned~ (nonstandard).
I’ll come tomorrow if there’s an opportune moment (standard). Note that ‘opportuned’ is nonexistent in English and ‘opportune’ only exists as an attributive adjective which precedes any noun it qualifies.
Wait for me at the ~stationery shop~ (nonstandard).
Wait for me at the stationer (standard). A person or shop selling stationery is a stationer.
GAB