Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.
Class II. Words Relating to SpaceSection II. Dimensions
2. Linear Dimensions
209. Shallowness.
NOUN:SHALLOWNESS &c. adj.; shoals; mere scratch.ADJECTIVE:SHALLOW, slight, superficial; skin -, ankle -, knee- deep; depthless, just enough to wet one’s feet; shoal, shoaly.