However, there are some related words that use prefixes and suffixes:
* Opportunity: This word uses the suffix "-ity" to create a noun meaning "a favorable or advantageous circumstance or occasion."
* Opportunistic: This word uses the suffix "-istic" to create an adjective meaning "taking advantage of opportunities, especially to gain something."
* Un-opportune: This word uses the prefix "un-" to create an adjective meaning "not opportune, inconvenient, or untimely."
Let me know if you have any other word inquiries!