Striking success is a term that can be used to describe an accomplishment that is particularly impressive and noteworthy. The crossword solutions for this term are SIZZLER (7 letters), HIT (3 letters), ECLAT (5 letters), SMASH (5 letters), and WOW (3 letters). Each of these words can be used to describe something that has achieved great success, with SIZZLER and SMASH being particularly strong terms. HIT and WOW are more casual terms that can be used to express admiration for a successful outcome. ECLAT is a French word that is used to describe a brilliant success or display.