Adjective
fantasque (comparative more fantasque, superlative most fantasque)
(obsolete) fantastical
Fantasque class of 1935 carried five convert guns and nine torpedo tubes, but could achieve speeds of 45 knots (83 km/h; 52 mph), which remains the record speed for a steamship and for any destroyer. Source: Internet
Fantasque class, the fastest destroyer class ever built. Source: Internet