Without a guard; unguarded or undefended; lacking protection or supervision.
From guard plus the suffix -less (Old English 'læs' meaning lacking), a transparent formation meaning the absence or deprivation of guards or protection.
Simple words like 'guardless' pack psychological weight—in military language, being 'guardless' is dangerous, and in poetry about vulnerability, it's devastatingly evocative, showing how ordinary suffixes create powerful meanings.
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