fossilized (adj.)

• anile
• antediluvian
• antiquated
• antique
• archaic
• backed
• callous
• calloused
• case-hardened
• classical
• crabbed
• crusted
• crusty
• crystallized
• debilitated
• decrepit
• doddering
• doddery
• feeble
• fossil
• granulated
• hardened
• indurate
• infirm
• medieval
• moth-eaten
• old-world
• ossified
• palsied
• reinforced
• rickety
• rusty
• sclerotic
• senile
• set
• shaky
• shriveled
• solidified
• strengthened
• superannuated
• timeworn
• tottering
• tottery
• toughened
• vitrified
• weak
• withered
• wizened