1. infested with or resembling gnats; swarming with small flying insects
Usage: informal; chiefly descriptive of environments or conditions

Examples

• The gnatty air near the swamp made it difficult to enjoy the evening walk.
• We had to leave the picnic early because the area became too gnatty.
• The gnatty conditions by the lake improved once the sun went down.
• He complained about the gnatty weather during the humid summer months.