obser'vational

World English Dictionary
observation (ˌɒbzəˈveɪʃən) [Click for IPA pronunciation guide]
 
n
1.  the act of observing or the state of being observed
2.  a comment or remark
3.  detailed examination of phenomena prior to analysis, diagnosis, or interpretation: the patient was under observation
4.  the facts learned from observing
5.  an obsolete word for observance
6.  nautical
 a.  a sight taken with an instrument to determine the position of an observer relative to that of a given heavenly body
 b.  the data so taken
 
obser'vational
 
adj
 
obser'vationally
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Obser'vational is always a great word to know.
So is doohickey. Does it mean:
a gadget; dingus; thingumbob.
a chattering or flighty, light-headed person.
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