a submarine

to dive; to go under water; (in an online forum) to lurk

to submerge; to infiltrate; to steal into

hidden; potential; latent

potential; latent capacity

anti-submarine; antisubmarine

to lurk under water; to immerse oneself in (study etc); to lie low; to keep a low profile; quiet; reserved; self-possessed

to snorkel

anti-submarine (warfare)

Tao Qian or Tao Yuanming 陶淵明|陶渊明 (c. 365-427), Jin dynasty writer and poet