and ~ (indicates 2 contrasting actions)
A literary pattern used to list two contrasting or alternating actions, implying repetition or back-and-forth.
This pattern is a classical remnant used in formal or literary writing to express two actions that occur in alternation or contrast. It suggests that the situation involves going back and forth between the two actions, often with a sense of being unable to settle on one. For example, 行きつ戻りつ means 'going and returning' repeatedly, like pacing. It is not used in everyday conversation; you will encounter it in novels, essays, or news reports. The tone is stiff and rhetorical.
To form it, take the ます-stem of two verbs (the form without ます). The verbs are typically opposites: 浮く (to float) and 沈む (to sink) give 浮きつ沈みつ. The pattern can also be used with a single verb repeated, but that is rare. Because it is N1-level grammar, learners are expected to recognize it in reading rather than produce it in speech.