'tediously-presented' is a compound formed from the adverb 'tediously' (derived from the adjective 'tedious') and the past participle 'presented' of the verb 'present'. 'tedious' ultimately comes via Medieval Latin and Old French from Latin 'taedium' meaning 'weariness', while 'present' comes from Latin 'praesentare' meaning 'to place before or show'.

'tedious' developed from Latin 'taedium' → Medieval Latin 'taediosus' → Old French/Middle English forms → modern English 'tedious'. 'present' evolved from Latin 'praesentare' → Old French 'presenter' → Middle English 'present'. The modern compound phrase 'tediously-presented' is a modern English concatenation using the adverb + past participle pattern.

Initially, elements meant 'weariness' ('taedium') and 'to place before/show' ('praesentare'); over time they combined into an English descriptive phrase meaning 'shown or explained in a way that induces boredom', which is the present meaning.