устойчивый angolul

firm [firmer, firmest]▼(steadfast, secure (position))
adjective
[UK: fɜːm] [US: ˈfɝːm]

persistent▼(indefinitely continuous)
adjective
[UK: pə.ˈsɪ.stənt] [US: pər.ˈsɪ.stənt]

steadfast▼(fixed or unchanging; steady)
adjective
[UK: ˈsted.fɑːst] [US: ˈsted.ˌfæst]

steady [steadier, steadiest]▼(smooth and not bumpy or with obstructions)
adjective
[UK: ˈste.di] [US: ˈste.di]

sustainable▼(able to be sustained)
adjective
[UK: sə.ˈsteɪ.nəb.l̩] [US: sə.ˈsteɪ.nəb.l̩]

hardy [hardier, hardiest]▼(inured to fatigue or hardships)
adjective
[UK: ˈhɑː.di] [US: ˈhɑːr.di]

inconsistent▼(not consistent)
adjective
[UK: ˌɪnk.ən.ˈsɪ.stənt] [US: ˌɪnk.ən.ˈsɪ.stənt]

infirm▼(unstable)
adjective
[UK: ɪn.ˈfɜːm] [US: ˌɪn.ˈfɝːm]

uncertain▼(fitful or unsteady)
adjective
[UK: ʌn.ˈsɜːt.n̩] [US: ʌn.ˈsɝː.tn̩]

unstable▼(not stable)
adjective
[UK: ʌn.ˈsteɪb.l̩] [US: ʌn.ˈsteɪb.l̩]

unsteady▼(not held in position)
adjective
[UK: ʌn.ˈste.di] [US: ʌn.ˈste.di]