Q:

Correct term for "primary" and "secondary" hand

I'm looking for the correct term for a right-handed person's right hand, and a left-handed person's left hand, and same for their other hand, where one term signifies one's "primary" hand, and the other one's "secondary" hand.

A:

The "primary" hand is generally called dominant.

Dominant hand
Operant hand generally used for performing fine motor-skills tasks (e.g., writing, holding dental instruments)
Medical Dictionary for the Dental Professions © Farlex 2012 via TFD

From that, I would surmise subordinate hand for the other one.

A:

The non-dominant hand is commonly called the off hand. Also the weak hand. See any combat arts forum.
http://www.bladeforums.com/forums/showthread.php/206957-Question-Knife-position-Dominant-Hand-or-Off-Hand

