nájezdník znamená v angličtina

invader [invaders]▼(one who invades; an assailant; an encroacher; an intruder)
noun
[UK: ɪn.ˈveɪ.də(r)] [US: ˌɪn.ˈveɪ.dər]

marauder [marauders]▼(one who moves about in roving fashion looking for plunder)
noun
[UK: mə.ˈrɔː.də(r)] [US: mə.ˈrɒ.dər]

raider [raiders]▼(one who engages in a raid)
noun
[UK: ˈreɪ.də(r)] [US: ˈreɪ.dər]