similar is one of the 1000 most common headwords. sign - similar - simple similar is on the Academic Word List. Pronunciation (UK) IPA (key): /ˈsɪmələ/, SAMPA: /"sIm@l@/ (US) IPA (key): /ˈsɪməlɚ/, SAMPA: /"sIm@l@`/ Audio (US)(file) Adjective Positive similar Comparative more similar Superlative most similar Similar is on the Academic Vocabulary List. If two things are similar, they are almost the same, or the same in many, but not all, ways. Synonym: alike Antonym: different Canadian English is similar to American English, but there are some small differences in pronunciation, and spelling. My sister and I have very similar ideas. (mathematics) If two shapes are similar, they have the same shape, but might be different sizes. These two triangles are similar because they have the same angles, but they are not congruent because one is bigger than the other.Wikiwand - on Seamless Wikipedia browsing. On steroids.