amikucu

deepen , become deep , become deeper

Etymology:

amiku + -cu

amiku: (t) deep, profound; deeply, profoundly
-cu: (b.nenoj xfik) intransitive verb marker, become, get, turn (into)

Rhyming Words not Ending in -cu

:

cucu: (b) nipple
kawcu: (b) rubber
motsukawcu: (b) eraser, rubber