1) Buzzard 2) Coot 3) Cuss 4) Geezer 5) Old coot 1) Coot 2) Eccentric man 3) Eccentric old chap 4) Exclusively Anglo word 5) Exclusively Saxon word 6) Geezer 7) Graybeard 8) Greybeard 9) Grumpy old man 10) Methuselah 11) Old chap 12) Old codger 13) Old coot 14) Old fogey 15) Old fogy 16) Old man 17) Oldster, affectionately 18) Word of purely Anglo origin 
An easy going but steady man, one that will not move faster than he pleases.
• (n.) A singular or odd person; -- a familiar, humorous, or depreciatory appellation. • (n.) A miser or mean person.
Codg'er noun [ Confer Cadger .] 1. A miser or mean person. 2. A singular or odd person; -- a familiar, humorous, or depreciatory appellation. [ Colloq.] « A few of us old codgers met at the fireside. Emerson. » 
[n] - used affectionately to refer to an eccentric but amusing old man
old codger noun used affectionately to refer to an eccentric but amusing old man
an eccentric man, esp. one who is old.