The negative connotations toward left-handed people were quite apparent by the various epithets used to label them. Although presently it seems that the caustic references to describe them have lost their provocative meanings, or perhaps they’re just ignored.
Gawk: An awkward person; a fool; a simpleton.
Gauche: Graceless; socially awkward, from French gauche meaning left.
Whereas, dexterous (from Latin dexter, meaning “right”) and adroit (from the French droit, also meaning “right”) both have the connotation of skillfulness and cleverness, while the “left-handed” words such as sinister (from the Latin word “left”) and gauche, discussed above, have derogatory inferences.
The word left itself had negative connotations. It derives from Old English lyft-“weak, foolish”.
What’s interesting is the reason that the right hand became the dominant hand was because the left hemisphere of the human brain controls the movement of the right hand. It also governs language, conceivably our most important mental attribute. Right-handedness was also thought to inspire speech. It’s thought that the left brain, which controlled manual action, continued on to controlling the vocal apparatus for speech.