My impression is that only civil servants like using the term
teaghlach for "family". It has that clinical administrative feel that government departments are so fond of.
Muintir has the broadest appeal (amongst all the dialects and also in meaning). It includes all who are near and dear to you.
For a "household", I think Connemara people prefer
comhlódar (CO =
comhluadar) though some use the loanword
feaimilí.
Muintir "family (extended)"
MWEEN-tirh
/mi:N´t´ər´/
Slender t is somewhere between a t and a ch sound, like the t in "ritual".
The slender r, which I have written as "rh" in the phonics, is lightly flapped like Scottish r but so light that it almost buzzes.
Teaghlach "family (nuclear)"
TIE-lukh
/t´aiLəx/
The first syllable is somewhere between TIE and CHAI.
The broad ch /x/ (kh in my phonics) is like the ch in
loch /lox/ (lokh), never like a k sound. It may help to think of a very breathy h pronounced deep in the throat. Could also be described as the sound people make when clearing phlegm from the throat.