Vincent's NT Word Studies
11. To them (enwpion autwn). Rev., literally, in their sight.Idle tales (lhrov). Lit., silly talk; nonsense. Only here in New Testament. Used in medical language of the wild talk of delirium. Wyc., madness. Tynd., feigned things.
Robertson's NT Word Studies
24:11 {As idle talk} (hws leros). Old word for nonsense, only here in the N.T. Medical writers used it for the wild talk of those in delirium or hysteria. {Disbelieved} (epistoun). Imperfect active of apistew, old verb from apistos, without confidence or faith in. They kept on distrusting the story of the women.