ichidan verb, intransitive verb
become domesticated; settle into domestic life
Describes someone, often after marriage, becoming accustomed to household routines and losing a carefree or single lifestyle. Can carry a slightly negative nuance of becoming dull or unadventurous.
結婚してから彼もすっかり所帯じみてしまった。
Since getting married, he has completely settled into domestic life.
ichidan verb, intransitive verb
be worn out from domestic life;
Emphasizes the tired, shabby, or unkempt appearance resulting from the burdens of household responsibilities. Often used for someone who has let themselves go after marriage.
子育てに追われて、すっかり所帯じみた格好になってしまった。
Busy with raising children, I've ended up looking completely worn out from domestic life.