detmive fu'ivla

x1 has experienced x2 (timestamp-style expression of dimensionful measure of time) units of time of existence/life according to standard x3

This word is broader/more general and more versatile/flexible than nancaji. x2 may be any expression that is acceptable as the sumti submitted to the first terbri of detri; however, unlike detri1, which can be interpreted as representing elapsed time from some culturally accepted reference start-time, this word measures running time from the start of the existence of x1, according to standard x3.

In notes:

x1 is x2 (li; no default value assumed, but - unless explicitly overridden - assumed to be expressed with significant figures) years old according to standard of measurement x3; colloquial form: x1 is/has x2 (years (of age)).