sincerity -- (the quality of being open and truthful; not deceitful or hypocritical; "his sincerity inspired belief"; "they demanded some proof of my sincerity")
sincerity, unassumingness -- (a quality of naturalness and simplicity; "the simple sincerity of folk songs")
seriousness, earnestness, serious-mindedness, sincerity -- (the trait of being serious; "a lack of solemnity is not necessarily a lack of seriousness"- Robert Rice)
(Sound)
