"More tall talking" is a phrase that usually refers to someone who speaks arrogantly or makes exaggerated claims. Antonyms for this phrase would be words that describe someone who speaks honestly and modestly. Some possible antonyms could include: "humble", "truthful", "sincere", "down-to-earth", "genuine", "unassuming", "realistic", "straightforward", "practical", "reliable", "modest", "trustworthy", and "authentic". Using antonyms to describe someone who speaks in a less boastful manner can give a more positive impression of the person, emphasizing their humility and honesty.