A rubbery composition is prepared by combining (A) a rubber component, (B) a cellulose, and (C) fluorene compound having a 9,9-bis(aryl)fluorene skeleton. The fluorene compound (C1) may be a compound represented by the following formula (1):

wherein a ring Z represents an arene ring, R 1 and R 2 represent a substituent, X 1 represents a heteroatom-containing functional group, k denotes an integer of 0 to 4, n denotes an integer of not less than 1, p denotes an integer of not less than 0. The rubbery composition has improved mechanical properties such as strength, elongation, and hardness.