Eccentric or impractical.
An eccentric, crazy or foolish person.
Someone addicted to crack cocaine (i.e. a drug addict).
Characterized more by usefulness, practicality, or comfort than by attractiveness, formality, or fashionableness, especially of clothing.
Able to be sensed by the senses or the psyche; able to be perceived.
Acting with or showing good sense; able to make good judgements based on reason, or reflecting such ability.