Final answer:
Leonardo DiCaprio's film with the fewest lines of dialogue is 'The Revenant'. In this movie, his character Hugh Glass communicates more through actions and emotions rather than speech.
Step-by-step explanation:
Among Leonardo DiCaprio's films, the one with the fewest lines of dialogue is The Revenant. In this intense historical drama directed by Alejandro G. Iñárritu, DiCaprio plays the role of Hugh Glass, a frontiersman on a fur trading expedition in the 1820s. This character is known for having very few lines as much of the film focuses on his physical performance and survival in the wilderness after being left for dead. The film is more visually and emotionally driven, rather than reliant on dialogue. It showcases DiCaprio's ability to convey complex emotions and his character's plight through his physical acting rather than through spoken words.