| characteristic of one only; distinctive or special | (sometimes followed by `to') applying to or characterized by or distinguishing something particular or special or unique |
| unique or specific to a person or thing or category | being or affecting a disease produced by a particular microorganism or condition; used also of stains or dyes used in making microscope slides |
| beyond or deviating from the usual or expected | relating to or distinguishing or constituting a taxonomic species |
| markedly different from the usual; special | stated explicitly or in detail |