gray-haired

frosty graying salt and pepper silvery snowy-haired white-haired whitish

aging getting on getting up in years senescent white-haired

aged ancient decrepit elderly gray mature tired venerable

fossil senior versed veteran

along in years broken down debilitated enfeebled exhausted experienced geriatric getting on grizzled hoary impaired inactive infirm matured not young olden oldish over the hill past one's prime seasoned senile skilled superannuated wasted

new young youthful

green inexperienced

contemporary current fresh late modern recent up-to-date