specific — having a special application, bearing, or reference; specifying, explicit, or definite: to state one's specific purpose.
exclusive — An item or story published or broadcast by only one source.
narrow — of little breadth or width; not broad or wide; not as wide as usual or expected: a narrow path.
particular — of or relating to a single or specific person, thing, group, class, occasion, etc., rather than to others or all; special rather than general: one's particular interests in books.
empty — A container (esp. a bottle or glass) left empty of its contents.
attentive — If you are attentive, you are paying close attention to what is being said or done.
careful — If you are careful, you give serious attention to what you are doing, in order to avoid harm, damage, or mistakes. If you are careful to do something, you make sure that you do it.
caring — If someone is caring, they are affectionate, helpful, and sympathetic.
concerned — If you are concerned to do something, you want to do it because you think it is important.
hard — not soft; solid and firm to the touch; unyielding to pressure and impenetrable or almost impenetrable.
mindful — attentive, aware, or careful (usually followed by of): mindful of one's responsibilities.
severe — harsh; unnecessarily extreme: severe criticism; severe laws.
rigid — stiff or unyielding; not pliant or flexible; hard: a rigid strip of metal.
strict — characterized by or acting in close conformity to requirements or principles: a strict observance of rituals.
tight — firmly or closely fixed in place; not easily moved; secure: a tight knot.
