英和和英

to fail in one's duty

ungrateful concerning gratitude

It is unjust―not fair.

an act to do one's duty faithfully

the bonds of gratitude

to do one's duty by―do the proper thing by―a friend

It is unintelligible.

to satisfy the demands of custom

to lie under obligations to any one

to sway a person by appealing to that person's sense of duty

to want for anything

to fail to show courtesy

the extent to which one faithfully does one's duty

conventional propriety―shackles of convention―demands of custom

to be bound to some one by gratitude

the bonds of gratitude

That is not fair

to divest oneself of humanity

Feel a sense of obligation

social courtesy based on moral justice

out of a sense of duty

to be meticulous about exchanging courtesies

to bind a man to oneself by gratitude

He has no heart or conscience.

Then I shall fail in my duty by my friend.

obligating

the condition of being swayed by one's sense of duty

a minor duty or obligation

a social courtesy

I help him as a matter of duty.