IPA: /ˈspɪtəlˌbʌɡ/
KK: /ˈspɪtəlˌbʌg/
A type of small insect that jumps and creates a frothy mass of liquid on plants, often seen on stems.
The gardener noticed a spittlebug on the stem of the plant, surrounded by its frothy secretion.
Spittlebug is formed from "spittle" (from Old English "spit", meaning saliva or liquid) and "bug" (from Middle English "bugge", meaning an insect or creature). The word refers to an insect that produces a frothy mass resembling spit.
Think of 'spittle' as the liquid or saliva that the bug produces, which helps you remember that a spittlebug is an insect that creates a spittle-like foam.
No commonly confused words.