Four-Letter Word

Every which way we approach
what we perceive as a problem
or a sticking point
has a universal
solvent lubricant.

It’s a four-letter word in English.

(You’ll know it in yours)    _____    _____ _____  _____

There are lots of four-letter words
in the English (et al) language.

Only one
fits and works.

Thank goodness
we only need the one.