Checking saved dictionary data and trusted language sources. This will stop automatically if a source does not respond.
/ˈfɔːtnɪθ/ · noun
(Northern England dialectal, obsolete) Alternative form of fortnight..
[…]to Anne Mercer, my daughter, the some of xiiij li., according to an agrement between her husband and me, to be paid within one fortnith of the death of my wiffe.
[…] & palmson fare which is kept the thursday before palme sunday all in the towne, & this fare setts all the fortnith fares for the year Round.
To dark is still used in Swaledale (Yorkshire) in the sense of to lie hid, as, 'Te rattens [rats] mun ha bin darkin whel nu [till now]; we hannot heerd tem tis last fortnith'.
Use fortnith when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Fortnith means (Northern England dialectal, obsolete) Alternative form of fortnight..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
[…]to Anne Mercer, my daughter, the some of xiiij li., according to an agrement between her husband and me, to be paid within one fortnith of the death of my wiffe.
FreeDictionaryAPI.com / Wiktionary · Original source · CC BY-SA 4.0
Dictionary data is provided by FreeDictionaryAPI.com and sourced from Wiktionary under its stated license.