A couple more words I see people mixing up all the time:
Averse and Adverse
While similar in some ways, they are not interchangeable. First, let’s look at averse.
According to Merriam-Webster online:
Etymology: Latin aversus, past participle of avertere
: having an active feeling of repugnance or distaste —usually used with to; averse to strenuous exercise
Ok, so it’s an adjective most of the time, such as in the usage above. This is when you don’t want to do something, like you’re averse to going to work on Monday morning (welcome to my world).
Now, adverse, again from Merriam-Webster online:
Etymology: Middle English, from Anglo-French advers, from Latin adversus, past participle of advertere
Date: 14th century
1 : acting against or in a contrary direction : hostile
2 a : opposed to one’s interests (an adverse verdict) (heard testimony adverse to their position); especially : unfavorable (adverse criticism) b : causing harm : harmful (adverse drug effects)
3 archaic : opposite in position
Also an adjective, but more in the sense of something outside you being bad for you, working against what you want.
The first is more what you feel about something, the second shows how something affects you (adversely).
Like your girlfriend will probably have an adverse reaction when you tell her you want to break up with her and start seeing her best friend. Good luck with that. Most people are averse to being dumped.