oscillate
[verb]
Synonyms: fluctuate, seesaw, sway, swing, vacillate, vary, vibrate, waver

[TahlilGaran] English Synonym Dictionary ▲

os‧cil‧late /ˈɒsəleɪt, ˈɒsɪleɪt $ ˈɑː-/ verb [intransitive]
[Date: 1700-1800; Language: Latin; Origin: past participle of oscillare 'to swing', from oscillum 'swing']

1. formal to keep changing between two extreme amounts or limits:
The stock market is oscillating wildly at the moment.
oscillate between
His income oscillated between £1,500 and £2,000 a month.

2. formal to keep changing between one feeling or attitude and another
oscillate between
Her attitude towards me oscillated between friendship and hostility.

3. to move backwards and forwards in a regular way:
The needle on the dial began to oscillate.

4. technical if an electric current oscillates, it changes direction very regularly and very frequently

[TahlilGaran] Dictionary of Contemporary English ▲