| noun | past times (especially in the phrase `in days of old') |
| adjective | (used especially of persons) having lived for a relatively long time or attained a specific age “his mother is very old” |
| adjective | of long duration; not new “old tradition” |
| adjective | (used for emphasis) very familiar “good old boy” |
| adjective | skilled through long experience “an old offender” |
| adjective | belonging to some prior time “erstwhile friend” |
| adjective | (used informally especially for emphasis) “a real honest-to-god live cowboy” |
| adjective | of a very early stage in development “Old English is also called Anglo Saxon” |
| adjective | just preceding something else in time or order “the previous owner” |
| oldness | noun | the opposite of youngness |