Synonyms of the word

spineless

• adj. Having no spine.
• adj. Cowardly; uncourageous.

gutless

• adj. (informal) cowardly; lacking courage or morals.

invertebrate

• n. An animal without vertebrae, i.e. backbone.
• n. (informal) A spineless person; a coward.
• adj. Lacking a backbone.

namby-pamby

• adj. Insipid and sentimental.
• adj. Lacking vigor or decisiveness; spineless; wishy-washy.
• n. One who is insipid, sentimental, or weak.
• n. Talk or writing which is weakly sentimental or affectedly pretty.

thornless

• adj. Without thorns.

unarmed

• adj. Defenceless and lacking weapons or armour.
• adj. Not carrying arms.
• adj. (biology) Not having thorns or claws etc.

weak

• adj. Lacking in force (usually strength) or ability.
• adj. Unable to sustain a great weight, pressure, or strain.
• adj. Unable to withstand temptation, urgency, persuasion, etc.; easily impressed, moved, or overcome; accessible;…
• adj. Dilute, lacking in taste or potency.
• adj. (grammar) Displaying a particular kind of inflection, including.
• adj. (chemistry) That does not ionize completely into anions and cations in a solution.
• adj. (physics) One of the four fundamental forces associated with nuclear decay.
• adj. (slang) Bad or uncool.
• adj. (mathematics, logic) Having a narrow range of logical consequences; narrowly applicable. (Often contrasted…
• adj. Resulting from, or indicating, lack of judgment, discernment, or firmness; unwise; hence, foolish.
• adj. Not having power to convince; not supported by force of reason or truth; unsustained.
• adj. Lacking in vigour or expression.
• adj. Not prevalent or effective, or not felt to be prevalent; not potent; feeble.
• adj. (stock exchange) Tending towards lower prices.
• adj. (photography) Lacking contrast.

wishy-washy

• adj. Wavering; lacking in commitment, certainty, or support; namby-pamby.
• adj. Thin or watery.