(a.) Pertaining to old age; affected with the infirmities of old age; as, a senile understanding\.

aged aging ancient anile childish childlike crabbed debilitated declining decrepit doddered doddering doddery doited dotard doting dotty enfeebled failing feeble fogy fogyish forgetful fossilized fuddy-duddy gerontal gerontic infirm mossbacked moth-eaten mummylike old old fart old fogy old-fogy old-fogyish palsied papery-skinned ravaged with age rickety run to seed rusty senescent shaky shattered shriveled simple stodgy stricken in years stuffy timeworn tottering tottery weak withered wizened