os·ten·si·ble 
(ŏ-stĕnsə-bəl)
(ŏ-stĕnsə-bəl)adj.
Represented or appearing as such; ostensive: His ostensible purpose was charity, but his real goal was popularity.
[French, from Medieval Latin ostēnsibilis, from Latin ostēnsus, past participle of ostendere, to show : ob-, ob- + tendere, to stretch; see ten- in the Appendix of Indo-European roots.]
os·tensi·bly adv.