Kevin Warsh's bare-bones communication style has left investors doubting his commitment to curb inflation, putting more pressure on the new Federal Reserve chairman to back up his words with interest-rate hikes.

The criticism comes as markets question whether the Fed's leadership can deliver the aggressive monetary tightening needed to tame rising prices. Warsh, known for his terse public statements, has yet to outline a detailed roadmap for policy normalization.

Traders and economists alike are parsing every remark for signals on the pace and magnitude of future rate increases. The lack of forward guidance has amplified uncertainty, with some arguing that clarity is essential to anchor inflation expectations.

As the Federal Reserve navigates a delicate balancing act between growth and price stability, the onus is on its new chair to translate rhetoric into decisive action. The coming meetings will test whether the central bank can match its tough talk with concrete steps.