1. In a suspicious manner.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• suspicuosly,
• suspisciously,
• suspicioulsy,
• sucpiciously,
• suspiciouse,
• suspisiously,
• suspicisouly,
• suspisiosly,
• suspiously,
• suspeciously,
• suspitiously,
• supciously,
• suspiciouly,
• suspiriously,
• suspisioucly,
• suspiciouslly,
• suspiciosly,
• suspicusly,
• suscpiciously,
• suspicously

• suspicious,
• suspicion,
• suspiciousness.

The adjective form of the word "suspiciously" is "suspicious".

The plural form of the word "suspiciously" is "suspiciouslys".

The singular form of the word "suspiciously" is "suspicious"