Many words in the "rather say" column hinder clear communication.
* If a dictionary visit is required, you've failed the audience.
* If multiple interpretations are possible, you've failed yourself.
Ex:
- Sagacious is out of favor since 1920 (google ngram).
- Solemn vs 'very serious' (implies religious aspects where there were none)
- Accomplished vs 'very capable (implies having attained something, not the potential to do so)
- Unyielding vs 'very strong' (replacement rarely applies) etc etc
Use of sagacious is not sagacious and a solemn problem indeed.
This accomplished man, accomplished tiny.
Behold, unyielding password encryption.