Use a hyphen to link a relationship term: sister-in-law, mother-in-law, father-in-law, brother-in-law, ... Plurals: sisters-in-law, brothers-in-law, mothers-in-law… But: stepmother, stepfather, stepdaughter, stepson, stepchild.

Does step by step need hyphens?

When a compound adjective comes before a noun, hyphenate it: step-by-step instructions. If the adjectives follow the noun, do not hyphenate them: the instructions were step by step.

Do you hyphenate step grandchildren?

step- No hyphen when used to form a compound, except with grand and great: stepbrother, stepparent; step-grandson, step-great-granddaughter. storyteller One word, no hyphen. stylebook One word when referring to AP Stylebook and stylebooks generically. ... See Words Formed with Prefixes under General Style Preferences.