This is the 11634th most frequent Spanish word.
forzosamente
Necessarily; by force.
"Forzosamente" here emphasizes an obligatory action: the confirmation is not optional.
Si deseas asistir a la reunión, será necesario forzosamente confirmar tu participación.
If you wish to attend the meeting, it will be necessary to compulsorily confirm your participation.
"Forzosamente" implies that the action of closing the door was done with force or out of necessity.
La puerta estaba cerrada forzosamente tras el incidente.
The door was forcibly closed after the incident.
"Forzosamente" indicates that there is no alternative to the procedure specified; it is an essential course of action.