I want to say that 'If I should give you an adjective that would be '. Although I am not sure if this is correct or if there is any better way to say that?
closed as unclear what you're asking by BiscuitBoy, anongoodnurse, NVZ, Mitch, TimLymington Mar 22 '16 at 23:03
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You might say, "if I could choose one word to describe you", I would use beautiful.
Also common is "in a word", as in "you are – in a word – beautiful."