sobriety UK /səˈbɹaɪ.ɪ.ti/US /səˈbɹaɪ.ə.ti/ noun7 •The quality or state of being sober.He celebrated five years of sobriety.The judge spoke with calm sobriety about the case. •The quality or state of not being intoxicated. •The quality or state of being grave or earnestly thoughtful. •The state or quality of being unhurried; a state of calm. •A state of moderation or seriousness. •Modesty in color or style. •Soundness of judgment. formssobrieties