the word 'unshaken' is a straightforward compound formed within english from its native germanic elements. the prefix 'un-,' with its ancient and pervasive function of negation, is attached to the past participle 'shaken' of the verb 'shake.' the verb 'shake' itself descends from the proto-germanic root skakaną, meaning "to shake, swing." the literal, physical sense of being "not shaken" evolved naturally into a metaphorical meaning describing emotional, intellectual, or spiritual steadfastness. thus, the modern abstract sense of being firm, resolute, and undisturbed, especially in one's convictions, logically extends from the core idea of not being physically moved or agitated.

Structure: un (not) + shaken (disturbed) - un: a prefix of germanic origin (old english) meaning "not," used to give a negative or opposite force. - shaken: the past participle form of the verb 'shake,' from old english 'sceacan,' meaning to move quickly to and fro, agitate, or disturb.