For pest, you could use pestus, pernicies, or lues.
pestis
Pesticide is made up of two words 'pest and -cide'. The word pest refers to an annoying or troublesome thing. The suffice -cide is borrowed from Latin meaning 'killer' and is used in compound words, such as pesticide and homicide
Pest sentence
Pest is not an idiom. It's a word.
A cadelle beetle is a common pest in storehouses, a beetle with the Latin name Tenebroides mauritanicus.
"pest"
pest
The root word for pesticide is "pest." It comes from the Latin word "pestis," meaning plague or pestilence.
Online auction sites
There is no Latin word "journal". But if you mean the Latin word for journal, it is "ephemeris".There is no Latin word "journal". But if you mean the Latin word for journal, it is "ephemeris".There is no Latin word "journal". But if you mean the Latin word for journal, it is "ephemeris".There is no Latin word "journal". But if you mean the Latin word for journal, it is "ephemeris".There is no Latin word "journal". But if you mean the Latin word for journal, it is "ephemeris".There is no Latin word "journal". But if you mean the Latin word for journal, it is "ephemeris".There is no Latin word "journal". But if you mean the Latin word for journal, it is "ephemeris".There is no Latin word "journal". But if you mean the Latin word for journal, it is "ephemeris".There is no Latin word "journal". But if you mean the Latin word for journal, it is "ephemeris".
pest
rodent?