soundless

The word 'soundless' is a transparent English compound formed from the native noun 'sound' and the adjectival suffix '-less'. The noun 'sound' itself has a complex history, originating from Latin sonus but entering Middle English via Anglo-Norman and Old French, displacing the native Old English swēg. The suffix '-less' is of ancient Germanic origin, directly from Old English -lēas, which meant "devoid of" and is related to the verb "to lose." The literal construction "without sound" perfectly captures the modern abstract meaning of absolute silence, demonstrating how English readily combines inherited Germanic and borrowed Latinate elements to create clear, descriptive terms.

Structure: sound (noise) + less (without) - sound: From Old English sund (swimming, sea) and influenced by Old French son, from Latin sonus (sound). In this compound, it functions as the noun root meaning "noise" or "audible vibration." - less: From Old English -lēas (devoid of, free from), from Proto-Germanic -lausaz. It functions as an adjective-forming suffix meaning "without."