Noun: Short for "terrifically considerable" easily confused with the word terrible. However the use of this word can potentially get oneself out of a sticky situation.
The word terrable is derived from the TERR in terrifically and the ABLE in considerable, thus the word terrable.
Guy: you're absolutely fucking terrable.
Girl: I know *leaves*
Guy: *underbreath* oh shit I didnt mean to say terrible
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