Where does “suspiciousness” come from?

Suspiciousness comes from Middle English suspiciousness, from Latin suspiciosus meaning inclined to suspect, plus Middle English -nesse, a suffix forming abstract nouns from adjectives.

suspiciousness (English): The state or quality of being suspicious

Definitions

  1. The state or quality of being suspicious

Ancestry of “suspiciousness”, step by step

StepLanguageWordMeaning
1EnglishsuspiciousArousing suspicion; Distrustful or tending to...
2Old Frenchsospecious
3Latinsuspiciosussuspicious
4Latinsuspiciōto look up at or to
5Latinsuspiceresecond-person singular present active subjunctive...
6Latinspecerepresent active infinitive of speciō;...
7LatinspecioI observe, watch, look at
8Proto-Italicspekjōto observe, to see
9Proto-Indo-Europeanspéḱyetito be looking at, to keep looking at
10Proto-Indo-Europeanspeḱ-to see, to look, to observe
Every word from Proto-Indo-European speḱ-