This is the 10876th most frequent French word.
oubliera
"Will forget" (future tense of "oublier").
The word 'oubliera' is used as the future tense of the verb 'oublier' (to forget), indicating a future action that will not happen (he will not forget).
Il n'oubliera jamais ce jour mémorable.
He will never forget this memorable day.
Here, 'oubliera' signifies a potential future event (forgetting to call) contingent on another future condition (being too busy).
Elle oubliera de vous appeler si elle est trop occupée.
She will forget to call you if she is too busy.
In this context, 'oubliera' is expressing a specific desired action or expectation in the future.