1. somewhat cool in temperature; moderately cold
Usage: informal; common in everyday speech
2. somewhat cool in manner or attitude; mildly aloof or reserved
Usage: informal

Examples

• It's a coolish morning, so bring a light jacket.
• The water in the pool is coolish but refreshing.
• She gave him a coolish reception when he arrived late.
• The weather turned coolish after the rain.
• He seemed coolish toward the new proposal at first.
• The breeze felt coolish against her skin.