'haphazardly-planned' originates from the word 'haphazard,' which comes from the Old French word 'hasard,' meaning 'game of chance.' The suffix '-ly' is added to form an adverb, and 'planned' is derived from the verb 'plan,' meaning 'to arrange or organize.'

'haphazard' evolved from the Old French 'hasard' to Middle English 'hap hasard,' eventually becoming 'haphazard' in modern English. 'Plan' comes from the French 'plan,' meaning 'a drawing or diagram.'

Initially, 'haphazard' meant 'a game of chance,' but over time it evolved to mean 'lacking any obvious principle of organization.'