1. to set straight :

2. in height, to set upright, set up one fallen or lying down, raise up , (Iliad by Homer); ὀρθοῦν κάρα, πρόσωπον (Euripides):—;of buildings, to raise up, rebuild , or, generally, to erect, build up , (Euripides):—;Pass. to be set upright , (Iliad by Homer), etc.: simply to rise from one's seat, stand up , (Aeschulus Tragicus)

3. in line, to make straight , (Aristotle Philosopher):—; Pass. ἢν τόδ᾽ ὀρθωθῆι βέλος if this dart go straight , (Sophocles Tragicus)

4. metaphorically (from signf. I) to raise up, restore to health, safety, happiness , (Herdotus Historicus), etc.:—;also to exalt, honour , (Pindar)

5. (from signf. II) to guide aright , (Aeschulus Tragicus); ὀρθ. ἀγῶνας to bring to a happy end , (Aeschulus Tragicus); ὀ. βίον (Sophocles Tragicus):—;Pass. to succeed, prosper , (Herdotus Historicus), etc.; τὸ ὀρθούμενον success , (Thucydides):—;of words and opinions, to be right, true , (Herdotus Historicus); ἐν ἀγγέλωι κρυπτὸς ὀρθοῦται λόγος a secret message is rightly sent by messenger, not by letter, (Aeschulus Tragicus)

6. in Pass. also, to be upright, deal justly , (Aeschulus Tragicus) (ML)