mattas znamená v Angličtina

decay [decayed, decaying, decays]▼(to deteriorate)
verb
[UK: dɪˈk.eɪ] [US: dəˈk.eɪ]

weaken [weakened, weakening, weakens]▼(to become weaker)
verb
[UK: ˈwiːkən] [US: ˈwiːkən]