An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

To state or assert positively; maintain as true.

M.E. affermen, affirmen "to decide upon; to state positively," from O.Fr. afermer "affirm, confirm; strengthen," from L. affirmare "to make steady, strengthen," from → ad- "to" + firmare "strengthen, make firm," from firmus, → firm.

Baedešidan, from bar- "upon, to," + deš, → firm, + infinitive suffix -idan.

The act of affirming or something affirmed.

Verbal noun of → affirm.

1) To support or establish the certainty or validity of; verify.

2) To establish the truth, accuracy, validity, or genuineness of.

L. confirmare "make firm, establish," from → com- intensive prefix + firmare "to strengthen," from firmus, → firm.

Âdešidan, from prefix a- + deš "→ firm" + infinitive suffix -idan.

The act of confirming or the state of being confirmed.

Verbal noun from → confirm.

1) Having a solid structure that resists pressure.
2) Solidly or securely fixed in place.

M.E. ferm, from O.Fr. ferm "strong, vigorous; healthy, sound; steadfast," from L. firmus "strong, steadfast, stable," from PIE root *dher- "to hold firmly, support."

Deš (Hamadâni) "firm, steady," (Ilâmi) dež "intact, entire," (Hamadâni) daj "intact, full," (Šuštari) dec "full," may be related to Proto-Ir. *dar- "to hold, keep;" Av. dār- "to hold, keep;" Pers./ Mid.Pers. dâštan/dâr- "to have, hold, keep;" cf. Skt. dhar- "to hold, keep, preserve;" L. firmus "firm, steady, as above."

1) Feeble or weak in body or health, especially because of age.
2) To unvalidate.

M.E. infirm, from L. infirmus "weak, frail, not strong or firm" from → in- "not, opposite of" + firmus, → firm.

Nâdeš, from nâ- "not," → in-, + deš, → firm.