Possible Clues:

• Trendy terms
• 'The Secret Life of Bees,' e.g.?
• "To infinity and beyond"?
• *Trendy terms
• Popular jargon ... or a hint to 17-, 25-, 39- and 50-Across
• Trendy, much-used lingo ... or a hint to the starts of 16-, 23-, 35- and 48-Across
• Snazzy jargon, and a hint to the starts of the starred answers
• Pseudo-technical jargon: 'Drone verbal contention'
• Argument after Belize took in Uzbekistan with fashionable jargon
• Techno-jargon