in theory — used to say what should happen or be true according to an idea, plan, or set of rules, although this may not be what happens in reality
Part of speech: ADVERB
Definition: used to say what should happen or be true according to an idea, plan, or set of rules, although this may not be what happens in reality
Pronunciation (IPA): /ɪn ˈθɪri/
Example Sentences
- In theory, my diet plan is perfect—I just haven't tried following it yet.
- In theory, cats and dogs can live together peacefully, but my house is proof that theory is often wrong.
- In theory, this bridge can hold ten tons, but the engineers still ran extra safety tests.
in theory
ADVERB[/ɪn ˈθɪri/]
used to say what should happen or be true according to an idea, plan, or set of rules, although this may not be what happens in reality
In theory the raft should float, but reality has other plans.
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🎤Pronunciation
🌳Etymology
Origin
The phrase 'in theory' combines the preposition 'in' with 'theory', which derives from Ancient Greek 'theoria' (observation, contemplation). Greek philosophers used theoria to describe pure intellectual speculation and observation, contrasting it with practice or direct action. The preposition 'in' was added to indicate a statement made within the theoretical realm, carrying the implication that reality may differ from what theory suggests.
Breakdown
in (preposition, meaning 'within') + theory (from Greek theoria, from thea 'viewing' + -oria 'act of'; literally 'act of observing'). The compound phrase indicates something that is true or valid according to theoretical principles rather than practical experience.
🎵Rhyme
🔗Collocations
📝Examples
“In theory, my diet plan is perfect—I just haven't tried following it yet.”
“In theory, cats and dogs can live together peacefully, but my house is proof that theory is often wrong.”
“In theory, this bridge can hold ten tons, but the engineers still ran extra safety tests.”
“In theory, waking up early gives you more time, but in practice I just end up more tired.”
📚Related Words
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