dikni -dik- gismu

x₁ is regular/cyclical/periodic in property (ka)/activity x₂ with period/interval x₃.

Also uniform; resonant (= dikslicai). See also slilu, rilti, xutla, manfo, boxna.

In notes:

boxna: x₁ is a wave [periodic pattern] in medium x₂, wave-form x₃, wave-length x₄, frequency x₅.
manfo: x₁ (object/event) is uniform/homogeneous in property x₂ (ka).
rilti: x₁ (sequence/non-text quote) is a rhythm/beat of music/expressive form x₂.
slilu: x₁ oscillates at rate/frequency x₂ through set/sequence-of-states x₃ (complete specification).
xutla: x₁ is smooth/even/[soft/silky] in texture/regularity.
jefydiknalgundei: x₁=di₁=dj₁ is a regularly-occurring period of days off work [weekend] lasting x₂=dj₂ days, recurring every x₃=j₂=di₃ weeks (default 1), for worker x₄=g₁, at job x₅=g₂
jvajvo: l₁ is a regular/predictable lujvo (compound predicate word) with meaning l₂ and arguments l₃ built from phrase l₄ and having an argument structure according to rule j₁.
tende: x₁ (entity) tends, has tendency to x₂ (property of x₁)