Straight and strait.
The homophone for "direct" is "dye rect", and for "narrow" it is "narrow". A natural channel of water is called a "creek".
not crooked = straight body of water = strait
The homophone for direct, meaning not crooked, is "erect."
wry, rye
straight, strait
The homophone for direct, not crooked, narrow, natural channel of water is "strait."
straight, strait
straight, strait
The antonym for crooked is straight.
The answer is that there is no homophone for can, but can is a homonym.
Comparative: more crooked Superlative: most crooked
Him is the homophone for hymn.