kampflos
without a fight
Without putting up a fight or resistance; surrendering.
Die belagerte Festung ergab sich kampflos.
The besieged fortress surrendered without a fight.

without a fight
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without a fight
Without putting up a fight or resistance; surrendering.
Die belagerte Festung ergab sich kampflos.
The besieged fortress surrendered without a fight.

The word is composed of 'Kampf' (fight) and the ending '-los' (-less, without). The ending '-los' means 'without', so 'kampflos' literally means 'without a fight'.
Der Gegner war so stark, dass unser Team den Sieg kampflos abgeben musste.
The opponent was so strong that our team had to concede the victory without a fight.
'Kampflos' is very often used like an adverb to describe how an action is carried out. In that case, it remains unchanged after the verb.
Die Mannschaft hat das Spiel kampflos verloren.
The team lost the game without a fight.
In the literal sense, 'kampflos' is often combined with verbs such as 'sich ergeben' (to surrender), 'aufgeben' (to give up), 'verlieren' (to lose), or 'eine Stadt übergeben' (to hand over a city).
Nach wochenlanger Belagerung ergab sich die Armee kampflos.
After weeks of siege, the army surrendered without a fight.
to result / surrender
'sich ergeben' and 'kampflos' both have to do with giving up or a lack of resistance. 'sich ergeben' is a verb and describes the action: someone gives up, surrenders, or resigns themselves to a situation. 'kampflos' is an adjective and describes how something happens: without a fight, without resistance, or without great effort. The words can be confused because they often appear in similar situations. But you say 'jemand ergibt sich' (someone surrenders / resigns themselves) and 'jemand gibt kampflos auf' (someone gives up without a fight) or 'ein kampfloser Sieg' (a victory without a fight).

Die Mannschaft gab das Spiel nicht kampflos auf.
The team did not give up the game without a fight.
Die Soldaten ergeben sich, weil sie keine Munition mehr haben.
The soldiers surrender because they have no ammunition left.