The phrase "scarcely large" is correct and usable in written English.
It is an informal way of saying that something is very small, or not very big. For example, "The room was scarcely large enough for two people."
The minuscule towns are old and weathered; harbors, scarcely larger than municipal swimming pools, are hemmed in by sheer cliffs.
The spot is scarcely larger than a dime, a coppery blush against the white of a soft cotton coverlet.
Young people can't afford their own homes and, if they can, they're scarcely larger than a shoebox.
Each unit looks scarcely larger than the aspirin-size battery it runs on, and is designed to be inserted deep into an ear canal.
We slowed as we passed along the streets of Paro – one of the most heavily touristed cities in Bhutan, surrounded by discreet luxury resorts, yet scarcely larger than an Alpine village.
It then cools and after about 10,000 years becomes a very dense white dwarf star, scarcely larger than Earth but with a density of thousands of kilograms per cubic centimetre.
Each contestant is allowed to bring one suitcase of clothes and another case, scarcely larger than an attache, for books and other diversions they might want over the next three months.
But that stubbornly self-deprecating nation of 10 million people by the North Sea, in an area scarcely larger than New Jersey, has enjoyed an extraordinary visibility in New York City of late.
At the neighborhood's heart, the serene green wedge of Cobble Hill Park is flanked on the north by period town houses and on the south by one of the sweetest ensembles in New York, a row of two-and-a-half- and three-story brick dwellings that seem scarcely larger than dollhouses.
