least
last but not least: seelast.
least said, soonest mended a difficult situation will be resolved more quickly if there is no more discussion of it.
the line of least resistance: seeresistance.
not least notably; in particular.
to say the least (or the least of it) used as an understatement or euphemism to imply that the reality is more extreme, usually worse.
2014Real Clear Markets The tax bill and Obamacare double-play, coming with a midterm election fast approaching and the economy continuing to limp along … are ill-timed to say the least.