Omnism - every logophiles dream word. Truth isn't just found in christianity, hinduism, buddhism or islam, it can be found in all religions. This is true spirituality. Holy shit, I thought I was the only one!
Sanātana Dharma (Devanagari: सनातन धर्म meaning "eternal dharma" or "eternal order") which has been proposed as an alternative name for Hinduism (Hindi Hindu Dharm हिन्दू धर्म,) "Hinduism" is a fairly modern term promoted first by Westerners.