The Open Dictionary

spineless

adjective

UK/ˈspaɪn.ləs/
US/ˈspaɪn.ləs/

Definitions of spineless adjective

  1. Lacking courage and determination; not willing to take risks.

    • He was too spineless to defend himself against the unfair treatment.

    • The manager was a spineless individual, afraid to make any decisions for fear of offending anyone.

    • He knew the boss was wrong, but he was too spineless to stand up and object.