"staler" in the adjective sense
1. stale
lacking freshness, palatability, or showing deterioration from age
"stale bread"
"the beer was stale"
2. cold, stale, dusty, moth-eaten
lacking originality or spontaneity no longer new
"moth-eaten theories about race"
"stale news"
Source: WordNet® (An amazing lexical database of English)
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