similitude

This word is about one thing being like another in an important way. Sometimes it means a close likeness in form or character. For example, two stories may feel connected because they share the same basic idea, even if the people and places are different. An artist might also aim for it in a portrait, trying to catch not only a person's face but something of their character.

It can also mean a comparison used to explain something, especially in older writing. In that sense, one thing is set beside another so the reader can see the point more clearly. The word is more formal than "similarity," and it often suggests a deeper shared pattern rather than a small surface match.

Similitude refers to the state of being similar, alike, or comparable. It often points to a shared quality, pattern, or character that links two things, not just a quick surface resemblance. While "similarity" is the usual everyday word, "similitude" is more formal and often feels broader or deeper.

The word has been used in more than one way over time. In general writing, it can simply mean likeness: you might notice a clear similitude between two myths, two faces, or two life stories. In older religious or literary language, it can also mean a comparison, an analogy, or a parable-like example used to make an idea easier to understand. If someone "speaks in similitudes," they are teaching through comparisons and figurative examples.

The term has also had technical uses. In geometry, it can refer to figures that have the same shape even if they differ in size. In science and engineering, the "principle of similitude" deals with the way a model and a real object can behave in comparable ways under the right conditions. That sense is specialized, but it grows out of the same core idea of shared form or pattern.

Today, you are most likely to see the word in thoughtful or literary contexts. You could say there is a striking similitude between the experiences of immigrants across different centuries, or a surprising similitude between two pieces of music that seem unrelated at first. In each case, the word points to an underlying connection, a shared pattern, or a meaningful likeness. It is the kind of word people choose when "similarity" feels a little too plain.