awkward — An awkward situation is embarrassing and difficult to deal with.
impossible — not possible; unable to be, exist, happen, etc.
inappropriate — not appropriate; not proper or suitable: an inappropriate dress for the occasion.
inconvenient — not easily accessible or at hand: The phone is in an inconvenient place.
occupied — to take or fill up (space, time, etc.): I occupied my evenings reading novels.
unlikely — not likely to be or occur; improbable; marked by doubt.
unavailable — suitable or ready for use; of use or service; at hand: I used whatever tools were available.
unobtainable — to come into possession of; get, acquire, or procure, as through an effort or by a request: to obtain permission; to obtain a better income.
