The phrasal verb "give off" is predominantly used in informal speech, though it can appear in semi-formal contexts, particularly when discussing topics related to science or the environment. It typically describes the emission or release of something, such as a smell, light, heat, or a gas, from a particular source. For example, one might say "The flowers give off a pleasant aroma" or "Factories give off pollutants into the atmosphere." Its usage is often physical or literal, involving actual substances or energy being emitted. However, it can also be metaphorically applied to describe someone projecting a certain aura or impression, as in "He gives off a friendly vibe." This dual usage makes it versatile in both tangible scientific contexts and more abstract personal interactions.
B2
UpperIntermediate
1. To emit, send out, or exude something like a smell, light, heat, or vapor.
The flowers gave off a sweet fragrance that filled the room.
The old engine gives off a lot of smoke when it starts.
The burning logs gave off a warm glow, perfect for a cold night.
After the rain, the soil gave off a fresh earthy scent.