An antonym for windy might be calm.
calm, still, tranquil
The definition of tremble to shake, or vibrate. Generally, this is associated with anxiety or fear. So, it is fairly easy to conclude that the antonyms to tremble are words like calm, or steady.
Antonyms for undulation: 1] still 2] motionless 3] flat 4] calm 5] unmoving
Can you do windy ? No, so it is not a verb ! lol !
antonyms
Some synonyms for agitator are disruptor, dissident, malcontent, anarchist, advocate. Some antonyms for agitator are conciliator, peacemaker, conservative, moderate, arbitrator.
Bellicose is a term which means belligerent. Synonyms of this word include combative, threatening, aggressive, and antagonistic. Some antonyms of this word include agreeable, calm, easygoing, and pacific.
They can be antonyms (opposite meanings), not synonyms.
go on www.synonym.com 4 synonyms & antonyms
Antonyms: opposite. Synonyms: similar.
Synonyms: moving Antonyms: Fixed, Stationary
there is no synonyms or antonyms for convection current
Synonyms. Synonyms are words the same in meaning and antonyms are opposites
They are synonyms. Synonyms have similar meanings, antonyms have opposing meanings.
they are closer to synonyms than antonyms, although they are not direct synonyms.
Antonyms. Antonyms = Opposites Synonyms = Same Meaning