weak-minded
adjective
• lacking determination, emotional strength, or intellectual capacity.
Similar:
irresolute,
weak-willed,
weak,
impressionable,
spineless,
indecisive,
unassertive,
persuadable,
persuasible,
submissive,
compliant,
pusillanimous,
foolish,
simple,
feeble-minded,
witless,
mindless,
brainless,
stupid,
idiotic,