gefahrlos
safe
Without posing or being associated with danger or risk; safe.
Nach der Entschärfung der Bombe war das Betreten des Geländes wieder gefahrlos möglich.
After the bomb was defused, entering the site was possible again safely.

safe
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safe
Without posing or being associated with danger or risk; safe.
Nach der Entschärfung der Bombe war das Betreten des Geländes wieder gefahrlos möglich.
After the bomb was defused, entering the site was possible again safely.

The adjective is made up of 'Gefahr' (danger) and the ending '-los' (-less). The ending '-los' means 'without', so 'gefahrlos' literally means 'without danger'.
Dank der neuen Brücke ist der Schulweg für die Kinder jetzt gefahrlos.
Thanks to the new bridge, the way to school is now safe for the children.
'Gefahrlos' (safe/safely) can describe an action as an adverb or stand before a noun as an adjective. As an adverb it stays unchanged; as an adjective it is declined.
Man kann das Medikament gefahrlos einnehmen.
You can take the medication safely.
This word is often used in contexts where safety is important. It is frequently found in instructions, warnings, or descriptions of products and places.
Die Chemikalie kann nach der Verdünnung gefahrlos entsorgt werden.
The chemical can be disposed of safely after dilution.
sure / safe
'sicher' and 'gefahrlos' are close in meaning when it comes to protection from danger. 'sicher' is more general and can describe people, places, routes, or situations. 'gefahrlos' means more specifically that something can be done without danger or risk. Learners may confuse the words because both express 'not dangerous'. 'gefahrlos' fits especially well with actions, for example using, entering, or trying something. 'sicher' sounds more natural when describing a protected state.

Am Abend kann man den Weg gefahrlos benutzen, weil er gut beleuchtet ist.
In the evening, the path can be used safely because it is well lit.
Bei starkem Wind bleiben die Boote im Hafen sicher.
In strong winds, the boats remain safe in the harbor.