docile

Synonyms: accommodating acquiescent adaptable agreeable amenable biddable childlike complacent cool docious ductile easily influenced easy easygoing gentle governable humble laidback manageable meek mellow mild obedient obliging orderly pliable pliant quiet resigned soft tame teachable tractable usable weak-kneed well-behaved willing yielding

Antonyms: determined headstrong inflexible intractable obstinate opinionated stubborn uncooperative unyielding