that is
Proposed by a contributor, not yet supported by evidence.
Meaning · English
Used to confirm or emphasize something
Register: neutral
Examples
I'm going to the store, that is, if I can find my keys
AI-drafted example auto-approved by rule (illustrative, not a corpus attestation)
Sources & notes
Everyday learner phrase (CEFR B2); level cross-referenced from published learner lists. Definition pending editorial review. Definition drafted by AI (@cf/meta/llama-3.3-70b-instruct-fp8-fast) and auto-approved by rule on 2026-08-01; pending editor spot-check.
Advertisement
Ad space — ads help keep Idiomer free. Premium will remove them.
Common questions
What does “that is” mean?
Used to confirm or emphasize something
Is “that is” formal or informal?
that is is generally neutral.
Advertisement
Ad space — ads help keep Idiomer free. Premium will remove them.