Unilateral

3 clues
One-sided
Single-handed.
Kind of decision
Similar answers:
Afterall
Afterallah
Afterallissaid
Apteral
Bilateral
Bilateralaccord
Bilaterals
Bilateraltreaty
Bitteralex
Bitterallemande
Collateral
Culateralligator
Equilateral
Hoopsteralonzo
Interalia
Interalsatia
Lateral
Lateralinking
Laterally
Lateralmove