Final answer:
The word 'aloof' describes being remote in manner, but it is not included in the given options. The choices provided do not match the definition, suggesting a possible error in the question.
Step-by-step explanation:
The 5-letter word for "remote in manner" is aloof, which is not listed among the provided options. The word "aloof" signifies a state of being distant, reserved, or not friendly. However, since it is not one of the options, we may need to reconsider the choices given, as they might have been incorrectly provided. If we are to choose from the given options despite none of them precisely matching the definition, none of them aptly describes being remote in manner. The best course of action would be to seek clarification on the choices or the definition of the term.