so deep or strange that it cannot be understood
- Similar:
- mysterious
- Opposite:
- clear
11+ vocabulary theme
Thinking & knowing
Wondering, deciding, remembering and understanding. Foundation words are free for everyone; the harder levels come with Premium.
Quick quiz
Ten questions from the thinking & knowing theme in the 11+ styles: closest meaning, opposites, odd one out, words in context and missing words. Marked straight away, with explanations. No account needed.
Start the quizPrintables
A word list (word, meaning, similar word and example) and a matching worksheet with answers. Free account needed: it takes a minute.
More themes
- Feelings & moods
- Character & personality
- Movement & action
- Speaking & sounds
- Looks & appearance
- Size & amount
- Light & colour
- Time & change
- Weather & nature
- Animals & living things
- Places & buildings
- Home & everyday things
- Good & bad
- Speed & strength
- Friendship & conflict
- Food & the senses
- Body & health
- Science & space
- Adventure & danger
- Stories & imagination
- School & learning
- Rules, power & society
- Work & money