English for Today by Ganiu Abisoye Bamgbose (Dr GAB)
Without -d
The team leader realised she was ~overaged~ (nonstandard).
The team leader realised she was *overage* (standard).
If you are overage, you are officially too old to do something.
Her relevance has made her position in the office more ~secured~ (nonstandard).
Her relevance has made her position in the office more *secure* (standard).
If you describe something such as a job as secure, it is certain not to change or end.
One will think this man is ~matured~ (nonstandard).
One will think this man is *mature* (standard).
If you describe someone as mature, you think that they are fully developed and balanced in their personality and emotional behaviour.
GAB

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