unsuspicious

adjective2

1. •
   Not suspicious; not suspecting, unaware (of something).

   • Unsuspicious of her danger, the lamb’s throat will hardly shun thy knife!—O be not thou the butcher of my lambkin! — 1748
2. •
   Not arousing suspicion.

   • The involvement of the adrenal gland can be accurately predicted by CT scans or MRI, allowing an adrenal sparing approach in the case of unsuspicious findings. — 2004