INAPPROPRIATE
inappropriate
(adjective) 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”
inappropriate, incompatible, out or keeping, unfitting
(adjective) not in keeping with what is correct or proper; “completely inappropriate behavior”
Source: WordNet® 3.1
Etymology
Adjective
inappropriate (comparative more inappropriate, superlative most inappropriate)
Not appropriate; not suitable for the situation, time, or place.
(informal) Improper; adult; sexual.
Synonyms
• out of line
• unfit
• unsuitable
• improper
Source: Wiktionary
In`ap*pro"pri*ate, a.
Definition: Not instrument (to); not appropriate; unbecoming; unsuitable;
not specially fitted; -- followed by to or for.
– In`ap*pro"pri*ate*ly, adv.
– In`ap*pro"pri*ate*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition