Lenten

[len-tn] /ˈlɛn tn/
adjective
1.
of, pertaining to, or suitable for Lent.
2.
suggesting Lent, as in austerity, frugality, or rigorousness; meager.
Also, lenten.
Origin
Middle English, orig. attributive use of lenten Lent, later taken as adj. ending in -en2
British Dictionary definitions for Lenten

lenten

/ˈlɛntən/
adjective
1.
(often capital) of or relating to Lent
2.
(archaic or literary) spare, plain, or meagre: lenten fare
3.
(archaic) cold, austere, or sombre: a lenten lover
Word Origin and History for Lenten
adj.

late Old English, from Lent + -en (2). Elizabethan English had Lenten-faced "lean and dismal" (c.1600).