What is the Latin word for suspicious?

The usual Latin words for “suspicious” are suspiciōsus, suspĭcax, suspiciō; also silentium. The right choice depends on the sense; see the distinctions below.

English → Latin

“suspicious” in Latin

suspiciōsussuspicious (either feeling suspicion, or exciting suspicion)suspĭcaxapt to suspect suspiciōto look up at or to; to admire, respect, regard, esteem, honor; to look askance silentiumsilence, stillness, quiet, noiselessness; obscurity; inaction, inactivity, cessation, standstill

The English word suspicious itself goes back to Latin speciō, through suspiciosus.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

suspicious

Apt to suspect, suspiciosus: suspicax (very seldom Liv., Tac.).

That is suspected, suspectus: suspiciosus (very suspicious). Tac. uses suspicax (e.g., silentium).

Quick answer

What is the Latin word for suspicious?: The usual Latin words for “suspicious” are suspiciōsus, suspĭcax, suspiciō; also silentium. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.