The phrase "a hefty boost" is correct and usable in written English.
It can be used to describe a significant increase or improvement in something, such as performance, support, or resources.
Example: "The new marketing strategy provided a hefty boost to our sales figures this quarter."
Alternatives: "a substantial increase" or "a significant enhancement."
That should swiftly deliver a hefty boost to the sagging economy from net trade.
But Mr Gensler is likely to get a hefty boost to his budget and staff.
Surf guitar, such Link Wray and Dick Dale, provided a hefty boost to the rock instrumental.
Under President Bush's proposed federal budget announced on Monday, research in the physical sciences would receive a hefty boost.
The Centers for Disease Control and Prevention estimates that in 2006, 56,000 people around the country were newly infected with H.I.V., the virus that causes AIDS, a hefty boost from previous estimates of 40,000.
"Long March-7's successful maiden flight will greatly lift up China's comprehensive space capacity, and give the country a hefty boost in building itself into a space power," he said.
Leading shares are heading higher for the second day, boosted by a hefty rise on Wall Street ahead of the US Federal Reserve's interest rate decision on Thursday.
Add in the spending, on unemployment benefits and so forth, that increases in a recession, and Britain will get a hefty rise in the budget deficit and a commensurate fiscal boost without the government lifting a finger.
That was driven by an unwinding of the hefty boost from net exports in the second quarter when U.S. exporters of soybeans and other products accelerated shipments to beat retaliatory tariffs from abroad.
The Syrian National Coalition, the opposition umbrella group that got together under watchful American eyes in Qatar in mid-November to replace the ailing Syrian National Council, has been given a hefty diplomatic boost in terms of recognition.
