と想定して
assuming that; supposing that; based on the assumption that (for planning)
Meaning
Formation
Explanation
と想定して is used when the speaker sets up a certain situation as an assumed scenario and then makes plans, preparations, or decisions based on it.
Unlike と仮定して, which is mainly used for logical analysis or reasoning, と想定して is commonly used when:
planning actions
preparing countermeasures
discussing realistic possibilities
designing systems, policies, or responses
The assumption is usually:
possible or realistic
used as a basis for preparation
not purely theoretical
This grammar is frequently used in:
disaster planning
business strategy
simulations
manuals and official documents
It sounds formal, objective, and practical.
Usage Notes
✔ Used for planning and preparation
✔ Assumption is often realistic or possible
✔ Common in formal / written contexts
✔ Often followed by 行動・対策・準備・設計
❌ Not emotional
❌ Not casual
❌ Rare in daily conversation