henceforth 

From this or that time on.
Usually used by 12 year olds to sound more educated when writing an essay for school.

Henceforth, parties which fail to get 5% of the vote will not be represented in parliament.

henceforth by m8rph September 22, 2017

henceforth 

From this time on or from that time on.

The company announced that it would henceforth charge royalties

henceforth by Ifeelwanderlust October 2, 2018

henceforth i am unable to can

The smartest way of saying "I can't/I cannot"

"The way I would write I can't in an essay? 'Henceforth I am unable to can'"

henceforth i am unable to can by me? gay, trans, and dumb September 26, 2021

Henceforthwith 

From this time on or from that time on, without delay, immediately or at once.
/ˈhensˌfôrTHˈwiTH/

A later Middle English spelling, retaining the breathy -s, of hennes, (henne + adverbial genitive ending -s), from Old English heonan (from this time, from now) forth with, along with, at the same time as.

Those climbing the stairs should do so with due cation otherwise they deserve to fall and lose brain cell henceforthwith.

Henceforthwith by SidneyShaw September 30, 2011

henceroth 

an exclamation you use instead of god, if you go to firelands high.

oh my fucking henceroth!

henceroth by Tiffany!(: June 2, 2008

Hencefortnight 

The two weeks after the upcoming two weeks.

I'm really looking forward to hencefortnight after these silly Covid-19 lockdown weeks are over. But first I'll shoot some celebrities turned zombie in the head from my rooftop during the zombiepocalypse.

Hencefortnight by Acoy April 3, 2020