as ‧ per ‧ sion /əˈspɜːʃ ə n, -ʒ ə n $ əˈspɜːrʒ ə n/ BrE AmE noun [countable] formal
[ Date: 1500-1600 ; Language: Latin ; Origin: aspersio 'throwing drops of water on to someone in a religious ceremony' , from aspergere , from ad- 'to' + spargere 'to scatter' ]
an unkind remark or an unfair judgment:
No one is casting aspersions on you or your men, Major.