1. making a low, inarticulate sound expressing doubt, hesitation, or disapproval
Usage: present participle of 'humph'; informal

1. the act or sound of making a low, inarticulate vocalization to express skepticism or displeasure
Usage: informal; gerund form

Examples

• He responded to the proposal with a humphing sound that suggested disapproval.
• She was humphing throughout the presentation, clearly unconvinced.
• The old man's humphing echoed through the quiet room.
• Instead of answering directly, he just started humphing and shaking his head.
• Her humphing made it clear she disagreed with the decision.
• The audience's humphing indicated their skepticism about the claim.