DOUBLE FIRST

\dˈʌbə͡l fˈɜːst], \dˈʌbə‍l fˈɜːst], \d_ˈʌ_b_əl f_ˈɜː_s_t]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.