undersuck

== English == === Etymology === From under- +‎ suck. === Verb === undersuck (third-person singular simple present undersucks, present participle undersucking, simple past and past participle undersucked) (ambitransitive) To suck under. === Noun === undersuck (countable and uncountable, plural undersucks) The act of sucking under, usually generated by the force of moving water. === See also === undertow