UNSTRAINED

unforced, unstrained

(adjective) not resulting from undue effort; not forced; “a voice with a pleasingly unforced quality”; “his playing is facile and unstrained”

unstrained

(adjective) not placed under psychological stress; “the campaign would not leave party loyalties unstrained”

Source: WordNet® 3.1

Etymology

Adjective

unstrained (comparative more unstrained, superlative most unstrained)

Not strained or tense.

(not comparable) Not having been forced through a strainer.

unstrained milk

Source: Wiktionary

Un*strained", a. Etym: [Pref. un- not + strain.]

1. Not strained; not cleared or purified by straining; as, unstrained oil or milk.

2. Not forced; easy; natural; as, a unstrained deduction or inference. Hakewill.

Source: Webster’s Unabridged Dictionary 1913 Edition