det

• (Now chiefly of numbers or dimensions) comparative form of little: more little; of inferior size, degree or extent; smaller, lesser.
  "Those Rattels are somewhat like the chape of a Rapier, but lesse, which they take from the taile of a snake."
• (proscribed) Fewer; a smaller number of.
  "There are less people here now."

verb

• (archaic) To make less; to lessen.
  "1386-90, Gower, Confessio Amantis What he will make lesse, he lesseth."

adj

• (archaic) Lesser; smaller.
  "Such too, to a greater or less extent, is the condition of the operatives of every denomination in England, which is the great workhouse of the world."

conj

• (dialectal, nonstandard) unless
  "To tell you true, 'tis too good for you, 'less you had grace to follow it"