• to dive, to dive, dove, dived, to duck, to run down, to sink, sank, sunk, to sub, to submerge
• dive, diving, dousing, duck
• to dive into, to go into, to immerse
• engrossment, indulgence
• to give oneself up to sg, to indulge in sg, to indulge oneself, to sink into sg, to steep
• to be wrapped up in his work
• to be engrossed in one's work