definition of
become

[1] #1 become v. [go, get] enter or assume a certain state or condition; "He became annoyed when he heard the bad news"; "It must be getting more serious"; "her face went red with anger"; "She went into ecstasy"; "Get going!". wn

[2] #2 become v. [turn] undergo a change or development; "The water turned into ice"; "Her former friend became her worst enemy"; "He turned traitor". wn

[3] #3 become v. come into existence; "What becomes has duration". wn

[4] #4 become v. [suit] enhance the appearance of; "Mourning becomes Electra"; "This behavior doesn't suit you!". wn