IPA: /ˈlɪŋɡwəli/
KK: /ˈlɪŋɡwəli/
In a manner that relates to language or the study of languages.
She expressed her thoughts lingually, using precise and clear language.
Lingually → It is formed from "lingua" (from Latin, meaning tongue or language) and the suffix "-ly" (meaning in a manner of). The word "lingually" means in a manner related to the tongue or language.
Think of 'lingua' which means tongue or language, and remember that 'lingually' refers to something done in a manner related to language.