deber
noun
1. Obligation, duty. (m)
2. Debt. (m)
Hacer su deber -> to fulfil one’s duty
article & verb transitive
1. To owe, not to pay a debt which is due.
Me debes cinco dólares -> you owe me five dollars
Esto lo debe a la influencia francesa -> he owes this to French influence
verb neuter
2. To be obliged to, to be to, must, ought, would, have to. (n)
Debía ser -> must have been
Deber de -> must
Debo hacerlo -> I must do it
He debido perderlo -> I must have lost it
Debe de ser así -> it must be like that
No debe de ser muy caro -> it can’t be very dear
verb reflexive
Deberse a -> to be owing to
Se debe al mal tiempo -> it’s on account of the bad weather
Puede deberse a que -> it may be because....