'animosity-laden' originates from the combination of 'animosity' and the suffix '-laden', where 'animosity' meant 'strong hostility' and '-laden' meant 'heavily loaded with'.

'animosity' changed from the Latin word 'animositas' and eventually became the modern English word 'animosity'. The suffix '-laden' comes from Old English 'hladen', meaning 'to load'.

Initially, 'animosity' meant 'strong hostility', and this meaning has largely remained the same in modern usage.