Bailly
ἀ·ΐδρυτος, ος, ον, c. ἀνίδρυτος, AR. Lys. 809.
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LSJ
or (more freq.) ἀνίδρυτος, ον, unsettled, unstable, δρόμοι ἀν. E. IT 971; χρόνοι irregular, Ruf. Interrog. 12; ἄοικοι καὶ ἀν. Plu. TG 9; νῆσος ἀν.
floating, D.H. 1.15; τὸ ἀν. τῆς γνώμης, τῆς οὐσίας, Ph. 2.112, Dam. Pr. 413.
with no fixed abode, Τίμων ἦν ἀ. τις Ar. Lys. 809 (lyr.); ἄσπειστος, ἀν. D. 25.52; οἰκουσιν φεύγοντες, ἀ. κακὸν ἄλλοις Cratin. 209 (expl. by ὃ οὐκ ἄν τις αὑτῷ ἱδρύσαιτο EM 42.10).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)