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Definition of Spineless
1. Adjective. Weak in willpower, courage or vitality.
Exact synonyms: Gutless, Namby-pamby, Wishy-washy
Similar to: Weak
Derivative terms: Namby-pamby, Spinelessness
Similar to: Weak
Derivative terms: Namby-pamby, Spinelessness
2. Adjective. Lacking a backbone or spinal column. "Worms are an example of invertebrate animals"
3. Adjective. Lacking spiny processes. "Spineless fins"
Antonyms: Spinous
4. Adjective. Lacking thorns.
Definition of Spineless
1. a. Having no spine.
Definition of Spineless
1. [adj]