dosáhlém
Dosáhlém is not a recognized standard form in contemporary Czech. It does not appear in major dictionaries and is not listed as a lemma. In most texts, the sequence is likely the result of a typographical error, a mistaken conflation of forms, or a nonce construction rather than a legitimate, widely used word.
Linguistic note and potential origins: If encountered, dosáhlém is typically interpreted as a nonstandard or erroneous
Usage guidance: In formal writing, avoid dosáhlém. Use dosáhl for past tense, or dosažený when you need
See also: dosáhnout, dosažený, dosáhnout vs. dosáhl, Czech grammar, past participles.