declinenounmasculine/dɨˈklinju/mediumde·clí·nioPortuguesEnglishEspanolFrancaisDefinitionThe action or process of decaying, losing strength, vigor, importance, or quality; decline.The region's textile industry went into decline.A decline in his cognitive abilities was noticeable.syndeclinedecaydeteriorationantrisepeakascentEtymologyDo latim 'declinium'.Related wordsdeclinardeclinaçãodeclinantedeclínio mental