Spelling.School · How to spell
How to spell in-depth
What it means: Comprehensive and thorough.
In a sentence: The teacher gave an in-depth explanation of the stars.
Same family: deep, deepen, deeply, thorough, detailed. If you can spell one, the shared part carries to the others.
Where it comes from: The adjective "in-depth" was first recorded in the mid-20th century, combining the preposition "in" with the noun "depth" to suggest going deeply into a subject. It grew popular in journalism and research writing to contrast brief overviews with more detailed, thorough studies.
Try spelling it
You will hear the word and a sentence. Type it and press Enter. Then four more words from the same level, so you know where you stand.
Words like this
disband · mid-term · sickness · kindness · interrupt · unkind · intercept · forty-three
Everyone has words they always get wrong. Spelling.School finds yours, shows you exactly why you miss them, and uses spaced repetition until you spell them right every time. Five minutes a day. Try five words without signing up.