If a part of your body distends, it becomes swollen and unnaturally large.
Someone who is tendentious is biased in their perceptions and opinions.
If you intend to do something, you plan on doing it or mean to carry it out.
When you extend something, such as time or a rubber band, you stretch it out, make it bigger or longer, or increase it.
When you attend something, such as a concert or a play, you go to it or are present at it.
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