inappropriate

adj. unsuitable, incongruous; unseemly; improper, incorrect

Adjective
1. not suitable for a particular occasion etc; "noise seems inappropriate at a time of sadness"; "inappropriate shoes for a walk on the beach"; "put inappropriate pressure on them"
(antonym) appropriate
(similar) unsuitable, improper, wrong
(see-also) improper
(attribute) appropriateness
2. not conforming with accepted standards of propriety or taste; undesirable; "incorrect behavior"; "she was seen in all the wrong places"; "He thought it was wrong for her to go out to work"
(synonym) incorrect, wrong
(similar) improper
3. not in keeping with what is correct or proper; "completely inappropriate behavior"
(synonym) incompatible, out or keeping(p), unfitting
(similar) incongruous

adj. inappropriate, irrelevant

(a.)
Not instrument (to); not appropriate; unbecoming; unsuitable; not specially fitted; -- followed by to or for.
  

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( SIADH )
Inappropriate secretion of ADH leads to retention of water and hence dilutional hyponatraemia.
Clinical features:
these are usually vague
*confusion
*nausea
*irritability
*fits and comma in later stages.
Mild symptoms usually occur with plasma sodium levels below 125 mmol/L and serious manifestations are likely below 115 mmol/L.
Diagnosis:
*dilutional hyponatraemia due to excessive water retention
*low plasma osmolality with higher 'inappropriate' urine osmolality
*continued urinary sodium excretion >30mmol/L
*absence of hypokalaemia (or hypotension)
*normal renal and adrenal and thyroid function.
Treatment:
*fluid intake should be restricted to 500-1000 mL daily, if tolerated, this will correct the biochemical abnormalities in almost every case.
*plasma osmolality and sodium and body weight should be measured frequently.
*if water restriction is poorly tolerated or ineffective, demethylchlortetracycline (600-1200 mg daily) may be given; this inhibits the action of vasopressin (ADH). It may, however, cause photosensitive rashes.
*when the syndrome is very severe, rarely hypertonic saline (300 mmol/L slowly i.v.) is given and frusemide may be given. These tearments are potentially dangerous and should only be used with extreme caution.