ETYMOLOGY
from Latin suspectus (u-stem) (suspect n.) + -ous
EXAMPLE
“…I thynke as our Cytezens be suspectuous and full of coniectoures; so dyd hee feare the comodyte of the place, and woulde eschewe the occasyon …”
From: The goodli history of the moste noble and beautyfull Ladye Lucres of Scene in Tuskane, and of her louer Eurialus verye pleasaunt and delectablevnto ye reder
By Pope Pius II, 1553
Lexicophilia 