IPA: /ˈhaɪfənləs/
KK: /ˈhaɪfənləs/
Not having a hyphen, which is a punctuation mark used to connect words or parts of words.
The word 'motherinlaw' is hyphenless, meaning it does not contain a hyphen.
Hyphenless → It is formed from "hyphen" (from Greek "hyphen", meaning to join or connect) and "-less" (meaning without). The word "hyphenless" means without a hyphen, indicating the absence of a connecting punctuation mark.
Think of a hyphen as something that 'joins' words together, and when something is 'hyphenless', it means it is without that joining mark.
No commonly confused words.