"slightly shallow" is correct and can be used in written English.
You can use it to describe something that is less deep than expected or desired. For example: "The lake was slightly shallow, so we had to be careful while we swam."
But given that her grassroots work has changed so many lives, doesn't working in TV – however revolutionary the programme – feel slightly shallow?
Facility and mastery – like celebrity — lead to a suspicion, among some, that what sounds perfect must come from a place that's slightly shallow.
It's a raucous, crazily energised, if occasionally slightly shallow epic on a familiar subject, conducted in the classic voiceover-nostalgia style with sugar-rush jukebox slams on the soundtrack.
Slightly shallow key travel.
It's an 8.7″ blade with a slightly shallow chef's knife shape.
Slightly shallow Moho at a distance of 140 km is required to explain observed PmP arrivals.
They replaced the closets with a low shelf and a mirror, a slightly shallower but still effective closet and a home office.
As a world to visit, then, Robinson looks fantastic, brims with wonder and detail but as a place to interact, it is a slightly shallower affair.
The result will be a slightly shallower pool, which will be subtly illuminated at night, with new walkways along its perimeter.
Any similar sized tin will do – a 20cm round cake tin will be more or less equivalent in volume, while a 20x20cm square tin will give you a slightly shallower brownie (be sure to decrease the baking time accordingly).
There are subtle stylistic differences between their images – Sedlacik characteristically prefers a slightly shallower depth of field using his Canon camera, and Galova sometimes opts for analogue over her Nikon kit to capture a more "poetic" feel.
