English suspicious

← Old French sospecious (mention)

← Proto-Indo-European *speḱ- (root)

← Latin suspiciosus (mention)

← Latin suspitiosus (mention)

→ English suss (clipping)

→ English sus (clipping)

→ English suspiciously (suffix)

→ English suspiciousness (suffix)

→ English unsuspicious (affix)

→ English oversuspicious (prefix)

→ English nonsuspicious (prefix)

→ English non-suspicious (prefix)