Free from danger; safe or secure, though 'safe' or 'risk-free' are the standard modern terms.
From 'danger' plus the negating suffix '-less' (meaning without), logically creating an antonym, though it never became a common word in standard English.
English has 'fearless,' 'harmless,' and 'painless,' so 'dangerless' should exist—but it doesn't, which shows that English doesn't always follow its own logical word-building patterns consistently.
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