expression / godan ~る verb:

• to demand gratitude; to do something for someone in order to create an obligation of gratitude from that person

godan ~る verb / expression:

• to create a debt in one's favor (e.g. by doing someone a favor); to create an obligation in one's favor

noun:

• monetary liabilities; pecuniary obligation

noun:

• duty and humanity; (a sense of) moral obligation and humane feelings - four character idiom

noun:

• debt; liabilities; obligation to a person or party (usu. legal or contractual) Antonym: 債権

expression:

• need not (verb); (not) have to; expressing absence of obligation or necessity - after neg. stem of verb
• need not have; need not exist ➜ 無い

noun / ~の noun:

• duty; sense of duty; honor; honour; decency; courtesy; debt of gratitude; social obligation

~の noun:

• in-law; relation by marriage

noun:

• sense of duty (obligation)

noun / ~する noun:

• requital of a favour (favor); repayment (of an obligation, kindness, etc.)

noun:

• weir
• bonds; fetters; ties of obligation