Wiktionary
vb. (context colloquial English) (eye dialect of have to English) Be required to; must.
Wikipedia
Hafta ( Persian: هفته) is the Persian word for week and is also used as a loanword in Hindi, Urdu and Turkish languages. A week has seven days, and is possible that it could be from Hepta, for seven.
Hafta ( Devanagari: हफ़्ता) is also slang for the protection money collected periodically by gangsters and corrupt policemen. In case of policemen, however even bribes paid are often quoted as giving hafta. This meaning seems to have gained its popularity because of its usage as part of Bombay Hindi. It is named so because the most common collection period is one week. The practice is highly prevalent in India and a refusal to pay up has its consequences.
Usage examples of "hafta".
He musta been frantic to get released from parole, to move around freely and not hafta answer questions.
If your girlfriend's already stuck in the Nine Beyonds, we're gonna hafta go in there and haul her out.
We hafta get the wounded back t'the cillas and get outta here before The Hook changes his mind and builds his fire up here.
Dat boy definitely got a nose for da Neteru, and you don't hafta be a seer for dat—the odder vamp, the master one, gwan always have a problem wit his ass.
You gwan hafta speak out loud some tings to dis team to guide 'em… dat's gwan be hard.
Kevin said, wondering if he'd hafta start looking at nursing homes afore too long.