Latin observō

→ Catalan observar (borrowed)

→ Spanish observar (borrowed)

→ Friulian osservâ (mention)

→ Italian osservare (mention)

→ Italian osservando (mention)

→ Latin observatus (mention)

→ Latin observans (mention)

→ Latin observandus (mention)

→ Latin observaturus (mention)

→ Ladin usserver (inherited)

→ Maltese ħares (derived)

→ Dutch observeren (derived)

→ Portuguese observar (borrowed)

→ Romanian observa (borrowed)

→ Yiddish אָבסערוואַטאָריע (derived)

→ Yiddish אָבסערווירן (derived)