1. The quality or state of lacking courage, determination, or moral strength; cowardice
His spinelessness prevented him from standing up to his boss.
Sua falta de coragem o impediu de enfrentar seu chefe.
2. Lack of firmness or resolve in character or decision-making
The spinelessness of the committee's response disappointed many supporters.
A falta de firmeza da resposta do comitê decepcionou muitos apoiadores.
3. Absence of a backbone or vertebral column (literal, biological sense)
Spinelessness is a characteristic of invertebrate animals.
A falta de coluna vertebral é uma característica dos animais invertebrados.