From en.wiktionary.org:
** Latin
*** Etymology
From [la] and an unattested verb [la], from [la], from [la]; cognate with
[cy], [got], and perhaps [sa].
The initial _in-_ may be, instead of the above, derived from a negated form of
an unattested adjectival [la], thus giving _indulgeō_ an original meaning of
"to not be hard toward" > "to be lenient toward" > "to indulge". This is
semantically smoother than if the "in-" were to mean "in".[1]
Possibly related to [la], [grc], thus originally with the meaning of "being
persistent, patient".
*** Pronunciation
- [indulgeō]
*** Verb
[2]
1. [la] to be kind or courteous (to); to be inclined (to); give free rein (to)
2. [la] to give oneself up (to); to be addicted (to), indulge (in) [takes a dative object]
3. [la] to concede , allow , grant , permit , bestow
4. to favor
**** Conjugation
[2]
**** Derived terms
{{col|la |indulgēns |indulgenter |indulgentia |indulgitās |indultor |indultus
}}
**** Descendants
- [sq]
- [en]
- [it]
*** References
- [R:L&S]
- [R:Elementary Lewis]
- [R:Gaffiot]
- [R:M&A]
- [R:NLW]
- [page=96]
References:
[1]. [page=302]