frothy

UK: ˈfrɒθi | US: ˈfrɔːθi

Definition
  1. adj. full of or covered with small bubbles; foamy

  2. adj. light and entertaining but lacking substance

Structure
froth <bubbles, foam>y <adjective suffix>
Etymology

The word "frothy" originates from Middle English "froth," which referred to foam or bubbles, particularly on liquids like beer or soapy water. The suffix "-y" is a common English adjectival suffix used to describe characteristics (e.g., "sunny," "cloudy"). Over time, "frothy" evolved to describe not just literal foam but also things that are light, insubstantial, or superficially appealing—much like bubbles that quickly dissipate.

Examples
  1. The barista served a cup of frothy cappuccino with a delicate heart design.

  2. Waves crashed against the rocks, leaving behind frothy white foam.

  3. The novel was entertaining but ultimately frothy, lacking deeper themes.

  4. She stirred the soapy water until it became frothy.

  5. His speech was frothy with jokes but offered no real solutions.