Antonyms of adj overdue

1 sense of overdue

Sense 1
delinquent, overdue -- (past due; not paid at the scheduled time; "an overdue installment"; "a delinquent account")

INDIRECT (VIA due) -> undue -- (not yet payable; "an undue loan")

Similarity of adj overdue

1 sense of overdue

Sense 1
delinquent, overdue -- (past due; not paid at the scheduled time; "an overdue installment"; "a delinquent account")
       => due (vs. undue) -- (owed and payable immediately or on demand; "payment is due")