verb - to do something harmful to someone just because they have done something harmful to you

noun - a positive side of something that is negative

noun - a layer of material that covers the inside surface of something

noun - an alcoholic drink made from honey

adjective, formal - feeling a great desire for revenge

noun - a space at the beginning of a paragraph

verb, formal - to find out the truth especially by making a considerable effort

verb - to try to spend less money, time, or material on something that you really need

noun, informal - giving too much attention to small details that are not important

adjective - something that can only be understood in one way

verb, British English - laugh quietly at something rude or unkind

adjective - very thin, in an unattractive way

adjective, British English - having raised areas on the surface

adjective - having an important, usually bad, effect on the future

verb, formal - to have a particular opinion about something