1. Mentally or physically infirm with age
   - doddering, gaga, senile

See also: old

• delimiter
• delineate
• delineated
• delineation
• delineative
• delineator
• delinquency
• delinquent
• delinquently
• deliquesce
• deliquescence
• deliquescent
• deliquium
• deliriant
• delirious
• deliriously
• delirium
• delirium tremens
• delist
• Delius
• deliver
• deliver the goods
• deliverable
• deliverance
• deliverer