挺直 Traditional form: 挺直 Pinyin (reading): tǐngzhí Definitions: upright; erect to straighten up (one's back etc); to hold erect Characters: 挺 - to straighten, to stand upright; rigid, stiff 直 - straight, vertical; candid, direct, frank Traditional characters: 挺 - to straighten, to stand upright; rigid, stiff 直 - straight, vertical; candid, direct, frank