'eagerly' originates from Middle English 'eagerly,' derived from 'eager,' which comes from Old French 'eagre,' meaning 'keen' or 'fervent.' 'Collected' comes from Latin 'collectus,' the past participle of 'colligere,' meaning 'to gather together.'

'eagerly' changed from Middle English 'eagerly' to its modern form, while 'collected' evolved from Latin 'collectus' through Old French 'collecter.'

Initially, 'eagerly' meant 'keenly' or 'fervently,' and 'collected' meant 'gathered together.' These meanings have largely remained the same in modern usage.