I think you mean "fort-night", the it is
2 weeks or 14 days
14
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern --R-N-G--. That is, nine letter words with 3rd letter R and 5th letter N and 7th letter G. In alphabetical order, they are: baronages forenight fortnight
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern FO--N-G--. That is, nine letter words with 1st letter F and 2nd letter O and 5th letter N and 7th letter G. In alphabetical order, they are: forenight fortnight
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 7 words with the pattern -OR--I--T. That is, nine letter words with 2nd letter O and 3rd letter R and 6th letter I and 9th letter T. In alphabetical order, they are: forenight foresight fortnight lordliest portliest torchiest worthiest
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 31 words with the pattern --R-NI---. That is, nine letter words with 3rd letter R and 5th letter N and 6th letter I. In alphabetical order, they are: acronical burinists chronical chronicle coronises coroniums doronicum eirenical eirenicon forenight fortnight geranials geraniols geraniums mariniere moronisms phrenisms phrenitic phrenitis pyronines sirenians sirenised sirenises sirenized sirenizes sironised sironises sironized sironizes veronicas veronique