What is the meaning of あう?

会う: to meet

合う: to match with, to be proper

遭う: to meet with (misfortune)

遇う: to meet with (misfortune)

逢う: to meet with (drama or pathos)

逅う: to meet with (unexpectedly)

邂う: to meet with (unexpectedly)

翕う: to meet with (very rare kanji usage)

覯う: to meet with (very rare kanji usage)

覿う: to meet with (very rare kanji usage)

遘う: to meet with (very rare kanji usage)

Source: wiktionary.org