The word "extend" has many synonyms that can be used to express the same or similar meanings. One such synonym is "prolong" which means to lengthen or increase the duration of something. Another synonym is "expand" which can mean to make something larger in size or scope. "Stretch" is another synonym that can be used to describe the act of extending something to reach a new distance, or to make something more elastic or flexible. Other synonyms may include "continue," "carry on," "offer," "grant," "give," "provide," and "offer up." Each of these synonyms brings a unique perspective to the meaning of "extend," making it a versatile word to use in a variety of different contexts.