péricliter betyder på engelska

decline [declined, declining, declines]▼◼◼◼(become weaker or worse)
verb
[UK: dɪ.ˈklaɪn] [US: dɪ.ˈklaɪn]

languish [languished, languishing, languishes]▼◼◼◻(to be neglected, to make little progress)
verb
[UK: ˈlæŋ.ɡwɪʃ] [US: ˈlæŋ.ɡwɪʃ]