outside

The outer side, surface, or appearance of something, or the space or area that is beyond an enclosed or defined space. While direct Japanese equivalents like 外部, 外側, or 屋外 cover many of its physical meanings, the English concept of "outside" can also extend to abstract or conceptual domains (e.g., something external to a system or idea) where a single direct Japanese word may not exist, requiring more descriptive phrasing.

• The outside of the old house was covered in ivy. — Referring to the exterior surface of a building.
• Let's go play outside in the park; it's a beautiful day. — Referring to the open air or space not within a building.
• He felt like an outsider, not really belonging to the group. — Referring to someone who is not part of a particular group or system.

In or to the open air; not inside a building or enclosed space. It can also mean beyond the limits, scope, or boundaries of something.

• It's too cold to eat outside tonight. — Referring to eating in the open air.
• Please wait outside until your name is called. — Referring to waiting just beyond the entrance of a building.
• That problem falls completely outside my area of expertise. — Referring to something beyond one's scope or limits.

Situated on or near the outer side or surface; external. It can also refer to something that is not part of a particular group, system, or organization.

• The outside temperature dropped sharply during the night. — Referring to the temperature in the open air.
• We need an outside opinion to resolve this dispute. — Referring to an opinion from an external source or person not involved.
• He always takes an outside perspective when analyzing complex issues. — Referring to a viewpoint from an external or objective standpoint.