long since

Many years past

Long since means a long time ago, with the implication that whatever happened then has continued or remained true up to the present: The building has long since been demolished.

It often pairs with verbs of completion or change: She had long since forgotten his name.

The phrase emphasizes both temporal distance and the settled nature of the outcome.

Related

erstwhile · once · previously · days of yore · in the past · way back · good old days · old times · bygone · ages · yore · years ago · beforehand · heretofore · hitherto · antecedently · olden · lang syne

Opposites
temporal distance from present

long sincejust now

The immediate past

recently · not long ago · lately · just · newly

temporal recency

long sincepresently

At the current time

currently · nowadays · at present · as of now · imminently

duration of state

long sincebrand new

Completely unused, just acquired

fresh · incipient · nascent · fledgling · not yet

Family

long, since, length, belong, longer, lengthy, prolong, lengthen, elongate

Familiarity
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Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G