Explore Movie Vocabulary
Learn English with movies. Discover how much of a movie’s vocabulary you already know and review unfamiliar words before watching.
Knock Knock
Unique vocabulary and phrases by level
How difficult is Knock Knock in English?
Knock Knock: 71.3% A1–A2 vocabulary; 11.9% B2, C1, and rare vocabulary. Vocabulary size: 1,061.
Unique vocabulary
- For A2 learners: 20.3% of unique vocabulary is above A2 or marked rare. Expect substantial preparation; start with short scenes and English subtitles.
- For B1 learners: 11.9% of unique vocabulary is above B1 or marked rare. Preview recurring words and use English subtitles.
- For B2 learners: 8.0% 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.
8.4% Unclassified. Unclassified vocabulary has no reliable level assignment.
Vocabulary weighted by word occurrences
91.4% A1–A2 vocabulary; 3.0% B2, C1, and rare vocabulary; 3.6% 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
- tock (rare): 11 occurrences in available subtitles.
Subtitle example:
Tick-tock. Tick-tock. Tick-tick-tock.
- clothe (C1): 7 occurrences in available subtitles.
Subtitle example:
but could we maybe throw our clothes in your dryerjust for, like, 10 minutes?
- moaning (B1): 7 occurrences in available subtitles.
Subtitle example:
(MOANING)
- playing (B1): 7 occurrences in available subtitles.
English meaning: Taking part in a game, performing music, or acting a role, depending on context.
Subtitle example:
(ROCK MUSIC PLAYING)
- sex (B2): 7 occurrences in available subtitles.
English meaning: Sexual activity, or a biological classification, depending on context.
Subtitle example:
and while we were having sex
Compare with titles in similar genres
- Hard Target: 11.9% B2, C1, and rare vocabulary (0.0 percentage points more than Knock Knock).
- Killer Joe: 11.9% B2, C1, and rare vocabulary (0.0 percentage points more than Knock Knock).
- 21: 11.9% B2, C1, and rare vocabulary (0.0 percentage points less than Knock Knock).
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: