IPA: /ˌɪn.juˈɛn.doʊ/
KK: /ɪnˈjuːˌɛndoʊ/
A hint or suggestion that is often negative or critical, usually made in a subtle way.
His comments were filled with innuendo, making it clear he disapproved of her choices.
Innuendo is formed from "in" (meaning into) and "nuere" (meaning to nod). The term originally referred to a hint or suggestion that is implied rather than stated directly, as if one is nodding towards something without saying it outright.
Think of someone 'nodding' ('nuere') to suggest something 'into' a conversation ('in') — that's how innuendo means an implied suggestion.