In the immortal words of the all-too-mortal Dr. Nick: “Inflammable means flammable? What a country!”
‘What a country,’ indeed, Dr. Nick. And what a word!
Or should I say ‘What a prefix?’
Or should I say ‘What a series of prefixes?’
Or should I just shut up?
You see, there are a couple of ‘in-’ prefixes, that come from a variety of Latin roots. Most obviously, ‘in-’ can mean ‘un-’ or ‘not,’ as in invisible, incredible, or inadequate.
But there’s also an ‘in-’ prefix that means ‘in,’ ‘into,’ or ’toward,’ as in income or inundate. This is also the prefix for inhibit, which comes from Latin roots that roughly mean ‘hold in.’ Therefore, uninhibited is not a double-negative. That’s also where inflammable comes from—an adjective that means something is liable to burst ‘INTO’ flame.
Now if someone could just explain why invaluable is better than valuable!