guideline

noun

guide·​line ˈgīd-ˌlīn 

: a line by which one is guided: such as

a

: a cord or rope to aid a passer over a difficult point or to permit retracing a course

b

: an indication or outline of policy or conduct

new guidelines on nutrition

Examples of guideline in a Sentence

Recent Examples on the Web

To send a letter to the editor about this article, submit online or check out our guidelines for how to submit by email or mail. —Heidi Williams, Denver Post, 19 Apr. 2026

This is especially important for a generation that came up at a time when physical activity guidelines only emphasized aerobic exercise. —Lisa Jarvis, Twin Cities, 19 Apr. 2026

In late March, the Johnson administration updated the guidelines again. —Joe Mahr, Chicago Tribune, 19 Apr. 2026

Ready Set Go guidelines provided to Cheboygan-area residents about the water levels at Cheboygan Lock and Dam Complex in Northern Michigan. —Paula Wethington, CBS News, 18 Apr. 2026

Word History

First Known Use

1785, in the meaning defined above

Rhymes for guideline

• acridine
• alkaline
• andesine
• anodyne
• anticline
• arginine
• asinine
• atropine
• benzidine
• borderline
• byzantine
• calamine

Kids Definition

guideline

noun

guide·​line ˈgīd-ˌlīn 

1

: a line by which one is guided

2

: an outline of standards for future policy or action