say it: SHAL-oh-nuhs
shallowness is a noun meaning "lack of depth of knowledge or thought or feeling". It carries 2 recorded senses.
lack of depth of knowledge or thought or feeling
the quality of lacking physical depth
“take into account the shallowness at that end of the pool before you dive”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for shallowness come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.