professional army (noun) standing army: regular army
Sinonime: abiding, annual, ceaseless,
chronic,
constant,
continual,
continuing, deathless,
durable,
eternal,
everlasting,
immortal, imperishable,
incessant,
inveterate,
lasting, lifelong, long-lasting, long-lived, longstanding, never-ending,
old, perdurable,
permanent,
persistent,
recurrent, seasonal,
sustained, unceasing,
unchanging,
undying, unfailing, uninterrupted, yearlong, yearly
Antonime: changing,
intermittent, interrupted