English observation

← English observe (suffix)

← English ation (suffix)

← Middle English observacion (inherited)

← French observation (borrowed)

← Middle French observacion (derived)

← Latin observatio (learned borrowing)

→ English observational (suffix)

→ English multiobservation (prefix)

→ English postobservation (prefix)

→ English preobservation (prefix)

→ English malobservation (prefix)

→ English nonobservation (prefix)

→ English misobservation (prefix)

→ English reobservation (prefix)

→ English obbo (mention)