The phrase "more nambypamby" refers to someone or something that is weak or ineffectual. Antonyms for this phrase would be strong, determined, resolute, and assertive. Instead of being indecisive or timid, one could exhibit confidence, bravery, courage, and fortitude. A person who is more definitive or uncompromising could be described as being less nambypamby. Other antonyms that fit this description include firm, unwavering, steadfast, and bold. It is important to avoid being nambypamby in situations that require leadership, decision-making, and action, as this can result in missed opportunities and failure to achieve goals.