1. 老居民；老前辈；老手
    If you refer to someone as an old-timer, you mean that he or she has been living in a particular place or doing a particular job for a long time.

    e.g. The old-timers and established families clutched the reins of power.
           久居此地的居民和根基稳固的家族牢牢掌控着权力。

2. 老人
    An old man is sometimes referred to as an old-timer .

old-timer的反义词

    e.g. The old-timers used to recall how hot 1886 was.
           老人们常常回想起1886年的酷热。

1. an elderly man

    Synonym: oldtimergafferold geezerantique

2. an experienced person who has been through many battles
    someone who has given long service

    Synonym: veteranoldtimerold handwarhorseold stagerstager