English obsess

← Proto-Indo-European *sed- (root)

← Latin obsessus (mention)

← Latin obsideō (mention)

← Latin ob (mention)

← Latin sedeō (mention)

→ English obsessive (suffix)

→ English obsession (mention)

→ English obsessor (suffix)

→ English obsessee (suffix)

→ Spanish asediar (cognate)

→ French obsession (mention)