'craggedness' originates from English, specifically formed by combining the noun 'crag' + adjectival suffix '-ed' + nominalizing suffix '-ness' to mean 'the condition of being cragged'.

'craggedness' developed from the adjective 'cragged' (meaning 'having crags'), which itself arose from Middle English 'cragge'/'crag' (meaning 'rock, cliff'). Over time the adjective 'cragged' gained the nominal suffix '-ness' to produce 'craggedness'.

Initially the root 'crag' referred simply to a 'rock' or 'cliff'; over time formations derived from it (like 'cragged' and 'craggedness') came to denote the quality or appearance of being full of crags—i.e., rugged rockiness.