What is another word for "external"?

Another word for external depends on context, as external means outside, outer, exterior, or outside of system. Synonyms include exterior, outer, outside, outward, outdoor, extrinsic, outside of, and exterior to. For example, external walls can be called exterior walls, outer walls, or outside walls, external appearance can be called outward appearance or exterior appearance. In business, external meaning outside company, synonyms include outside, outside firm, third-party, and independent. For example, external consultant can be called outside consultant or independent consultant. In anatomy, external meaning on surface, synonyms include outer, superficial, and exterior. For example, external features can be called outer features. In personal context, external factors can be called extrinsic factors or outside factors. More formal synonyms include extraneous and exogenous. Opposite of external is internal. So most common synonyms are exterior, outer, outside, and outward. For instance, you can say outer part instead of external part, exterior area instead of external area, outside help instead of external help. Choose synonym based on whether you refer to physical outside, organizational outside, or abstract outside, but exterior and outer are closest general synonyms for external.