This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Slang Lacking courage or drive.

adj. Slang Lacking substance; weak or insignificant.

adj. uncourageous

adj. lacking courage or vitality. Opposite of gutsy.

adj. lacking courage or vitality

adj. weak in willpower, courage or vitality

"In my opinion it's a very scrupulous review, and why Shafer would choose to characterize it as "fawning" and "gutless" is a mystery to me."

weak   

gutlessly    gutlessness   

spineless   

fucken    honorless    two-timing    dickless    suctorial    off-guard    bloodsucking    etherial    nine-days'    Limey