thru

Definition of thru

less common spelling of

Tho vs. Though and Thru vs. Through: Usage Guide

While never extremely common, tho and thru have a long history of occasional use as spelling variants of though and through. Their greatest popularity occurred in the late 19th and early 20th centuries, when their adoption was advocated by spelling reformers. Their current use occurs chiefly in informal writing (as in personal letters) and in some technical journals.

More from Merriam-Webster on thru

Nglish: Translation of thru for Spanish Speakers

Britannica English: Translation of thru for Arabic Speakers

Comments on thru

What made you want to look up thru? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a bell tower

Get Word of the Day daily email!

Test Your Vocabulary

Where in the World? A Quiz

  • peter bruegel tower of babel painting
  • What language does pajama come from?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!