Meaning → video example → shadowing

Hear the word you searched for in a real video.

Check the meaning, hear the sentence, then say it yourself.

Try the first 30 sentences of each lesson free, without signing up

English word

principal

B2Academic AWL-4Frequent NGSL-2

UK /ˈprɪnsəpl/US /ˈprɪnsəpl/

adjective

most important; main

noun

the person who is in charge of a college or (in Scotland and Canada) a university

1. Hear it in context

Play the full sentence where this word appears.

2. Say the same sentence

Shadow it and continue learning in the lesson.

Real video examples

See where your sentence appears

Sentence 72 · Pro

This sentence is beyond the 30 free sentences

Learn this sentence with Pro →Try the first 30 sentences of this lesson

The free preview is not the sentence containing your word.

the principal ideas and architecture and strategy of the System/360—are still governing the computer industry today.

Jensen Huang's Speech at Caltech

From one sentence to the full lesson

Bilingual subtitles · repeat a sentence · shadowing · word bank

Tap a word in the lesson, then save it to your word bank.

Open the lesson →

Print the lesson as a PDF

Preview and print the first 10 sentences free. The full handout requires Pro.

Preview printable lesson →

Remember principal through real videos

LingoTube turns TED / YouTube videos into sentence-by-sentence bilingual lessons: synced subtitles, tap any word for meaning and pronunciation, save to your word bank with spaced repetition.

Try the first 30 sentences of this lesson

The free preview is not the sentence containing your word.

Learn with famous talks

Steve Jobs' Stanford Address

Apple · Watch now

Sir Ken Robinson TED

TED · Watch now

Tim Urban TED

TED · Watch now