得る

1. Nidan verb with 'u' ending (archaic), suffix, after the -masu stem of a verb to be able to ...; can ...
2. Nidan verb with 'u' ending (archaic), transitive, formal to get; to acquire; to obtain; to procure; to earn; to win; to gain; to secure; to attain

える also 獲る

1. ichidan verb, transitive, 獲る esp. refers to catching wild game, etc. to get; to earn; to acquire; to procure; to gain; to secure; to attain; to obtain; to win
2. to understand; to comprehend
3. to receive something undesirable (e.g. a punishment); to get (ill)
4. auxiliary verb, ichidan verb, transitive, after the -masu stem of a verb to be able to ..., can ...