Available.
Likely to continue; viable.
Current, prevailing.
Attending or visiting (a stated event, place, etc.) habitually or regularly.
Conditions for advancing in any way.
The horizontal distance between the front of one step in a flight of stairs and the front of the next.
The whereabouts (of something).
The suitability of ground for riding, walking etc.
Course of life; behaviour; doings; ways.
Progress.
A departure.
Effectual or important.
Functional, in working order.
Having the power of acting; hence, exerting force, physical or moral; active in the production of effects.
Producing the appropriate or designed effect; efficacious.
Based upon, or consisting of, a surgical operation or operations.
An employee or other worker with some particular function or skill.
A spy, secret agent, or detective.
A participant in an operation.