Commanding veneration or respect by reason of age combined with high personal character and dignity of appearance; having an impressive appearance…

Relating to or characteristic of advanced years or long experience. Cf. grey-bearded, adj. 2, grey-headed, adj. 1b.

Having long experience in a particular (non-military) position, field, or activity.

With reference to emotional effect. attributive. Coupled with old. Of a person or thing: impressive because of age and appearance or experience…