1. the practice of operating submarines
Usage: nautical
2. a dating behavior where someone suddenly disappears from communication and then reappears unexpectedly
Usage: informal; slang

1. present participle of submarine: operating or traveling in a submarine
Usage: nautical
2. present participle of submarine: suddenly disappearing from communication in a relationship
Usage: informal; slang

Examples

• The navy’s submarining operations were classified.
• He was submarining through the Pacific Ocean.
• She accused him of submarining after he disappeared for weeks.
• The submarine was submarining beneath the ice caps.
• Submarining has become a common problem in modern dating.
• They were submarining to avoid enemy detection.
• His submarining behavior left her confused and hurt.