IPA: /əˈlaɪk/
KK: /əˈlaɪk/
Having a close similarity or resemblance to something else, but not being exactly the same.
The twins are as alike as two peas in a pod.
Comparative: more alike
Superlative: most alike
In a similar way or to a similar extent; when two or more things are similar in appearance, behavior, or characteristics.
They dress and walk alike.
Alike originates from the Old English 'gelic' (meaning similar) combined with the prefix 'a-' (meaning in the manner of). The word 'alike' means in the manner of being similar or having resemblance.
Think of 'in the manner of' ('a-') being 'similar' ('gelic') — that's why alike means similar.