疑う (translations)→ believe distrust doubt guess know surprised think wonder
疑念 (translations)→ confusion misgiving notion suspicion
調べる (translations)→ breakdown check clear confirm count determine do examine explore extricate fish inventory learn look open probe process reference review search see shake sleuth study test track understand
susceptibility susceptible susceptive suspect suspenders suspense suspicion suspiciously suspicious sustaining sustainment sustain susupense