digraph
graph, staph
A synonym for the noun vitality is oomph.
A similar word to fake beginning with ph is phoney
photograph
You can use the word, graph.
Phenylpropanolamine.
A pH of seven is called neutral. E.g Water
a pH of seven is said to be neutral (without acid)
Well, pH means "potential of hydrogen," so maybe the 8-letter word you're looking for is hydrogen.
The two-letter abbreviation for the Philippines is PH.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --A--PH. That is, seven letter words with 3rd letter A and 6th letter P and 7th letter H. In alphabetical order, they are: acaleph
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern I----PH. That is, seven letter words with 1st letter I and 6th letter P and 7th letter H. In alphabetical order, they are: ingulph