Altered conviction refers to a change in one's beliefs or opinions. Antonyms for this phrase include unwavering conviction, steadfast beliefs, and resolute opinions. These antonyms suggest that someone who holds an unwavering conviction has a firm and unchanging belief that cannot be swayed by outside influences. Likewise, someone with steadfast beliefs is committed to their opinions and unlikely to be influenced by others. Lastly, having resolute opinions implies a strong determination to stick to one's beliefs no matter what. By contrast, altered conviction suggests a degree of flexibility or openness to changing one's mind.