Explore Movie Vocabulary
Learn English with movies. Discover how much of a movie’s vocabulary you already know and review unfamiliar words before watching.

Once
Unique vocabulary and phrases by level
How difficult is Once in English?
Once: 78.3% A1–A2 vocabulary; 8.4% B2, C1, and rare vocabulary. Vocabulary size: 735.
Unique vocabulary
- For A2 learners: 16.2% of unique vocabulary is above A2 or marked rare. Preview recurring words and use English subtitles.
- For B1 learners: 8.4% of unique vocabulary is above B1 or marked rare. Try a short scene and check your comprehension; the vocabulary offers a relatively accessible starting point.
- For B2 learners: 5.4% of unique vocabulary is above B2 or marked rare. Try a short scene and check your comprehension; the vocabulary offers a relatively accessible starting point.
5.5% Unclassified. Unclassified vocabulary has no reliable level assignment.
Vocabulary weighted by word occurrences
94.8% A1–A2 vocabulary; 1.7% B2, C1, and rare vocabulary; 2.2% Unclassified.
This counts repeated eligible words. Phrases are excluded from this calculation to avoid counting their component words twice.
Recurring words and phrases to preview
- make up (B1): 5 occurrences in available subtitles.
Subtitle example:
# When your mind's made up #
- escalate (C1): 4 occurrences in available subtitles.
Subtitle example:
# Little cracks they escalated #
- hanky (rare): 4 occurrences in available subtitles.
Subtitle example:
We'd just hanky panky If I come now.
- hell (C1): 4 occurrences in available subtitles.
English meaning: A place of suffering in some religious beliefs; also used informally to express anger or surprise.
Subtitle example:
So fuck off. right? - Hell, I'm just tying my
- set up (B1): 4 occurrences in available subtitles.
English meaning: To arrange or prepare something; sometimes to trick someone into appearing guilty.
Subtitle example:
Kit's set up.
Compare with titles in similar genres
- Burlesque: 12.3% B2, C1, and rare vocabulary (4.0 percentage points more than Once).
- New York New York: 13.4% B2, C1, and rare vocabulary (5.0 percentage points more than Once).
- All That Jazz: 15.3% B2, C1, and rare vocabulary (7.0 percentage points more than Once).
These percentages describe vocabulary, not the proportion of dialogue you will understand. CEFR labels are estimates, not official film ratings. Accent, speed, songs, context, and your own vocabulary also affect comprehension. Repeated occurrences may include repeated dialogue or lyrics.
How we estimate vocabulary difficulty · Evidence generated: