due

nouns

that which is deserved or owed
"give the devil his due"
due
is a type of (narrower)
an abstract idea of that which is due to a person or governmental body by law or tradition or nature
"they are endowed by their Creator with certain unalienable Rights"; "Certain rights can never be granted to the government but must be kept in the hands of the people"- Eleanor Roosevelt; "a right is not something that somebody gives you; it is something that nobody can take away"
a payment that is due (e.g., as the price of membership)
"the society dropped him for non-payment of dues"
due
is a type of (narrower)
a periodic charge that does not vary with business volume (as insurance or rent or mortgage payments etc.)

adjectives

owed and payable immediately or on demand
"payment is due"
due
antonym
is similar to
subject to a demand for payment before due date
"callable bonds"
is similar to
payable by the recipient on delivery
"a collect call"; "the letter came collect"; "a COD parcel"
is similar to
subject to or requiring payment especially as specified
"a collectible bill"; "a note payable on demand"; "a check payable to John Doe"
is similar to
past due; not paid at the scheduled time
"an overdue installment"; "a delinquent account"
is similar to
awaiting payment
"accounts receivable"
is similar to
calling for the spending of cash
"his out-of-pocket costs were $10"
is similar to
subject to repayment
"business loans are usually repayable in regular installments"
scheduled to arrive
"the train is due in 15 minutes"
due
is similar to
considered likely or probable to happen or arrive
"prepared for the expected attack"
suitable to or expected in the circumstances
"all due respect"; "due cause to honor them"; "a long due promotion"; "in due course"; "due esteem"; "exercising due care"
due
antonym
capable of being assigned or credited to
"punctuation errors ascribable to careless proofreading"; "the cancellation of the concert was due to the rain"; "the oversight was not imputable to him"

adverbs

directly or exactly; straight
"went due North"
due