Believe tattoo in Chinese characters
Believe directly translated into Chinese as "相信", you may have seen someone tattooed with the Chinese character "信" or "相信". In fact, this expression, although the meaning is correct, but in the Chinese context is a slightly lower level of expression, is something an old lady could think of. So our recommendation would be "信仰" and then "笃", which means "to believe faithfully" or "to be convinced".