io debbo

must, have to

ˈd e b . b o → dovere
debb must; have to + o 1st person singular present
auxiliary · first singular · present indicative Rare #33,726
must, have to A less common, somewhat formal or literary variant of “devo.”
IT: Debbo partire subito.
EN: I must leave immediately.
Conjugation of dovere
Indicative present
SingularPlural
First devo
Second devi dovete
Third deve devono

Se debbo mantenere mio nipote, che abbia almeno un nome che mi piace.

If I have to support my grandson, he should at least have a name I like.

— La vita straordinaria di David Copperfield (2019)

Ora ci sono e debbo restare.

Now I’m here, and I have to stay.

— Il gattopardo (1963)

No, in questa c'è del bucato che debbo lasciare alla mia domestica.

No, there’s laundry in this one that I need to leave for my housekeeper.

— La vita straordinaria di David Copperfield (2019)

Io debbo dirvelo, non ho più un soldo.

I have to tell you, I don't have a penny left.

— La vita straordinaria di David Copperfield (2019)

Domani debbo andare a caccia, mi debbo alzare presto.

Tomorrow I have to go hunting, so I have to get up early.

— Il gattopardo (1963)

Debbo tornare allo spettacolo.

I have to go back to the show.

— La vita straordinaria di David Copperfield (2019)

Sounds similar to