adjective

1. using the left hand more skillfully than, and in preference to, the right
2. done with the left hand
3. clumsy; awkward
4. designating an insincere or ambiguous compliment; backhanded (sense )
5. morganatic: from the custom of having the groom give his left hand to the bride at such a wedding
6. made for use with the left hand or by left-handed people
7. turning from right to left; worked by counterclockwise motion
8. designating one who swings a bat, club, etc. rightward
9. having an asymmetrical molecular or crystal structure that is conventionally viewed as having certain components on the left side: said of an isomer that is the mirror image of one that is right-handed

adverb

1. with the left hand to write left-handed
2. in such a way that the bat, club, etc. swings rightward