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

See also: old

• motor scooter
• motor torpedo boat
• motor vehicle
• motor-assisted
• motorbike
• motorboat
• motorbus
• motorcade
• motorcar
• motorcoach
• motorcycle
• motorcycle cop
• motorcycle policeman
• motorcycling
• motorcyclist
• motored
• motorial
• motoring
• motorisation
• motorise
• motorised
• motorised wheelchair
• motorist
• motorization
• motorize